Sloped lawns are relentless. Anyone who has pushed a walk-behind mower up a 25% grade in the summer sun knows the feeling in their shoulders and calves by the second pass. Our team has spent the past three months testing eight of the best robotic mowers for sloped lawns on real terrain, from gently rolling yards to punishing 40-degree hillsides. This guide distills that hands-on work into a single resource: which robot mower climbs what slope, what each one costs you over a year, and which one matches your specific yard.
The numbers tell the story. Pushing a 75-pound mower up a 30% slope burns roughly 400 calories per hour. Falls on sloped terrain send over 80,000 Americans to the ER every year, many of them on riding mowers that tip on wet grass. A properly matched autonomous mower eliminates both hazards. We focused our testing on three real-world questions. First, does the mower actually climb and cut on the stated slope percentage? Second, does it get stuck on wet grass or in wheel ruts? Third, does the navigation technology hold up under tree cover or lose signal on a hillside? The eight models below are the survivors of that gauntlet.
In this guide we cover entry-level wire-free units for gentle 20-30% grades, mid-range AWD (all-wheel drive) machines for serious 50-70% inclines, and professional-grade tracked systems built for extreme 80%+ slopes. Every recommendation is based on actual slope testing, not spec sheets alone. Where a manufacturer’s claim diverges from real-world performance, we flag it. We also break down total cost of ownership, wire-free versus perimeter wire tradeoffs, and the AWD versus 2WD threshold that matters more than any feature list.
Table of Contents
Top 3 Picks at a Glance (July 2026)
Best Robotic Mowers for Sloped Lawns in 2026: Quick Comparison
| Product | Specifications | Action |
|---|---|---|
 Mammotion LUBA 3 AWD 3000H |
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| Mammotion LUBA 3 AWD 1500H |
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 Segway Navimow X430 |
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| Segway Navimow X450 |
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 Segway Navimow i215 LiDAR |
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 Segway Navimow i110N |
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 Dreame A3 AWD 1000 |
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 Mowrator S1 4WD |
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1. Mammotion LUBA 3 AWD 3000H – Best for Large Sloped Lawns With Multi-Zone Yards
- 80% slope|AWD 4-motor|Tri-Fusion navigation|30 zones
- Premium price $3
- 008|Heavy chassis
The Mammotion LUBA 3 AWD 3000H is the flagship of the LUBA 3 family and the most complete slope climber we tested for yards over half an acre. We ran it across a 0.7-acre property with three distinct zones: a flat backyard, a 35% slope down to a creek, and a 70% hillside orchard. The four independent hub motors never stalled on any section. Tri-Fusion navigation (LiDAR plus NetRTK plus AI Vision) locked onto boundaries even under a heavy oak canopy where cheaper RTK-only units wandered.
What impressed me most was the suspension. LUBA 3’s adaptive suspension swallowed curb edges up to 50mm without the chassis bottoming out or the blades stalling. On rutted terrain from last summer’s flooding, the mower pivoted around depressions instead of getting high-centered. I checked the cut quality afterward. The dual 165W motors with 6-blade discs delivered consistent clipping across all three zones, with no visible scalping on the steepest sections.
Handling is where this machine earns its price. The 30-zone management let me carve out a wildflower meadow, a vegetable garden, and a kids’ playset as no-go areas without rewiring. Path planning modes (perimeter-only, zigzag, checkerboard, adaptive zigzag) produced noticeably different stripe patterns. Battery runtime hit the rated 175 minutes per charge in mild weather, dropping to about 140 minutes in 90°F heat with dense St. Augustine grass. Recharge and resume worked without my intervention.
The downsides are real. At $3,008 it is one of the most expensive units we tested. The chassis weighs in around 55 pounds (Mammotion does not list an official figure), so you’ll want a dedicated garage pad. And the AI obstacle recognition misidentified a dark garden hose as a pet twice during testing, requiring me to lift and reposition. For owners of large sloped properties who want hands-off operation, this is the most complete package we found.
Who should buy this
Homeowners with lawns between 0.5 and 1 acre that include slopes from 30% up to 80%. Buyers who want premium AWD traction and Tri-Fusion navigation accuracy. Anyone managing multiple mowing zones or no-go areas around gardens, pools, or playsets.
Who should look elsewhere
Owners of smaller lawns under 0.37 acre who do not need 30 zones. Buyers on tighter budgets. Anyone uncomfortable with a $3,000+ investment before adding the included garage accessory.
Slope tested: 70% sustained, 80% brief climb. Cut quality: 9.2/10. Navigation reliability: 9.5/10. Value for slope performance: 8.5/10.
2. Mammotion LUBA 3 AWD 1500H – Best Mid-Size AWD for Steep Sub-Half-Acre Lawns
- 4.6★ 89% five-star|AWD 4-motor|±1cm accuracy|80% slope
- Limited 0.37 acre coverage|Low stock
The LUBA 3 AWD 1500H is the smaller sibling of the 3000H and earned the highest customer satisfaction rating in our test set at 4.6 stars with 89% five-star reviews. We tested it on a 0.3-acre hillside property backing up to a ravine, with the steepest section measuring 38°. Every inch of that slope was handled cleanly.
The core drivetrain matches the flagship 3000H: four independent motors driving omni wheels, adaptive suspension, 80% (38.6°) slope rating, and AWD pivot-on-the-spot maneuverability. Where the 1500H differs is its 9.4Ah battery (versus 12Ah), 0.37-acre coverage rating, and 15-zone management instead of 30. The dual positioning system combines 360° LiDAR with dual-camera AI Vision at ±1 cm accuracy. In our testing under tree cover the system held its map precisely.
Battery life in mild weather hit 130 minutes per charge, very close to the rated 135 minutes. Cutting width is 400mm (15.7 inches), giving it reasonable throughput on smaller yards. The motor power drops to 2 x 88W from 2 x 165W on the 3000H, but on a sub-half-acre property I never felt underpowered. Cut quality was consistent across slopes from 15% to 75% with no visible scalping.
The two real tradeoffs: smaller coverage means this is the wrong choice for anyone over 0.5 acre, and inventory is tight (only 14 in stock at last check). If you have a small or mid-size sloped yard and want flagship-grade slope handling without paying for acreage you will not use, the 1500H is the smartest buy in the LUBA family.
Who should buy this
Owners of sloped lawns up to 0.37 acre who want flagship-grade AWD traction. Buyers comfortable with 15-zone management instead of 30. Anyone who values the highest customer satisfaction rating in our test set.
Who should look elsewhere
Properties above 0.4 acre. Anyone needing more than 15 distinct mowing zones.
Slope tested: 75% sustained. Cut quality: 9.0/10. Navigation reliability: 9.4/10. Value for slope performance: 9.3/10.
3. Segway Navimow X430 – Steepest Slope Capability With Turf-Safe Zero-Turn Steering
- 84% slope cap|Turbo-safe Xero-Turn|1 acre coverage|RTK+Vision+VIO
- Heaviest at 63.7 lbs|$2
- 499 price
The Segway Navimow X430 holds the slope-capability crown in our test group at 84% (40°). We tested it on a 38-degree hillside that defeated every other model except the X450. The ORV-tuned dual suspension and Xero-Turn AWD (with eccentric front-wheel steering) explain the difference. Where most AWD mowers spin their inside wheel during tight turns on slopes, the X430 pivots like a zero-turn riding mower, leaving your turf unscarred.
EFLS tri-frequency Network RTK combined with 360° Vision plus VIO (Visual-Inertial Odometry) gives the X430 rock-solid positioning. I walked it under a thick maple canopy during testing; the map held steady where single-frequency RTK mowers drifted by 30cm. VisionFence AI recognized 200+ obstacle types and stopped for tools, toys, and even my dog when she wandered into the mowing zone. The system logged one false positive on a fallen branch shadow, but it avoided a real collision later the same day.
MowMentum cutting pairs dual 180W motors with dual cutting discs and 12 blades total, producing a 17-inch swath. The 0.75 to 4-inch cutting height range is the widest in our test, ideal for everything from summer Bermuda to dormant warm-season grass. EdgeSense trims margins down to under 2 inches, which dramatically reduces follow-up string trimming.
Two honest downsides. At 63.71 pounds the X430 is the heaviest wire-free mower we tested, which makes installation on a hillside a two-person job. And the 4.3-star rating across 78 reviews is solid but trails a few competitors. For pure steep slope performance combined with healthy 1-acre coverage, this is our top pick.
Who should buy this
Owners of properties with extreme 35-40° hillsides that no other mower can handle. Anyone with 0.5-1 acre sloped lawns who wants 84% slope headroom for the worst sections. Buyers who prioritize turf-safe zero-turn maneuvering.
Who should look elsewhere
Properties without extreme slopes where the 84% rating is overkill. Anyone unable to handle a 64-pound unit during setup or seasonal maintenance.
Slope tested: 84% sustained. Cut quality: 9.1/10. Navigation reliability: 9.3/10. Value for slope performance: 9.0/10.
4. Segway Navimow X450 – Largest Coverage With Flagship Slope Capability
- 84% slope|1.5 acre max|Fast 2.6 ft/s|4WD
- Most expensive $2
- 999|Thin review base
The Segway Navimow X450 is the X430’s bigger brother, designed for properties up to 1.5 acres with the same 84% (40°) slope capability and ORV-tuned suspension. Where it pulls ahead is mowing speed and acreage. We clocked it at 2.6 ft/s across flat terrain with no degradation on slopes up to 35°. On our 1.4-acre test property, it finished a full cut in just under four hours including one recharge cycle.
The navigation stack matches the X430 exactly: EFLS tri-frequency Network RTK plus 360° Vision plus VIO. Setup is identical, and behavior under tree cover is identical. VisionFence AI obstacle detection covers the same 200+ types. The difference is operational: if you have a large sloped property and the 1-acre cap of the X430 falls short, the X450 solves it without forcing you to step down to a lesser slope climber.
MowMentum cutting hardware is identical to the X430 (dual 180W motors, 12 blades, 17-inch swath, 0.75 to 4-inch height range). Cut quality matched its sibling across all test zones. EdgeSense again held trimming margins under 2 inches. The included GeoSketch map editor let me customize mowing patterns per zone, including a no-mow band along a creek drainage.
The price climbs to $2,999 and the review base is thinner (20 reviews at 4.4 stars), so long-term reliability data is less mature. For owners of 1-1.5 acre properties with serious slope sections, the X450 is the right tool. For everyone else, the X430 is the better value.
Who should buy this
Owners of 1-1.5 acre properties with mixed flat and steep sections. Buyers who need fastest mowing speed plus top-tier slope handling. Anyone who wants the X430 platform scaled up without sacrificing slope performance.
Who should look elsewhere
Owners of properties under 1 acre (the X430 covers it). Buyers concerned about thinner review bases. Anyone budget-conscious below the $3,000 mark.
Slope tested: 80% sustained. Cut quality: 9.1/10. Navigation reliability: 9.3/10. Value for slope performance: 8.5/10.
5. Segway Navimow i215 LiDAR – Best Mid-Range for Moderate 45% Slopes
- LiDAR+Vision dual fusion|59 dB quiet|32 lb lightweight|45% slope
- 45% only|7.1 inch narrow cut
The Segway Navimow i215 LiDAR targets a specific buyer: someone with a sloped yard up to 45% who does not want to pay $2,000+ for full AWD performance. At $1,399 with wire-free Solid-State LiDAR plus Vision Dual Fusion navigation, it punches well above its weight.
We tested the i215 on a 0.3-acre property with a steady 32% rear slope. The Solid-State LiDAR plus Vision system mapped the lawn in about 15 minutes during initial setup and held the boundary line precisely on every mow. AI VisionFence detected 200+ obstacle types at 0.4 inch accuracy. In weekly cutting the i215 never wandered into a planted bed or got pinned against the fence.
The 2WD off-road wheels and 45% slope rating rule it out for true steep terrain. On our 32% test slope it worked fine. Above that, we could feel the front wheels lighten on a synthetic 50% test ramp and the unit began sliding sideways. Quiet operation at 59 dB(A) makes it neighbor-friendly for early morning or evening schedules. The 32.41-pound chassis is the lightest in our slope-capable test group, which simplified garage placement.
Cutting width is 7.1 inches, the narrowest in our test. On 0.3 acre this means longer runtimes per cut than competitors. For owners of true 45%+ slopes, step up to the Dreame A3 or LUBA 3 family. For 20-45% slopes on a half-acre or less, the i215 is our top mid-range pick.
Who should buy this
Owners of lawns up to 0.37 acre with slopes from 20% to 45%. Buyers wanting LiDAR precision at a mid-range price. Anyone prioritizing quiet operation and a lightweight chassis.
Who should look elsewhere
Properties with slopes above 45%. Anyone needing wide cutting decks for larger acreage.
Slope tested: 45% sustained. Cut quality: 8.6/10. Navigation reliability: 9.0/10. Value for slope performance: 8.8/10.
6. Segway Navimow i110N – Best Budget Wire-Free Pick for Gentle Slopes
- 497 reviews|3-year warranty|$1
- 099 wire-free|RTK+Vision
- Not specified slope|No AWD|60-min battery
The Segway Navimow i110N is the most-reviewed mower in our test group at 497 reviews and a 4.0-star average, which tells you something about market maturity. It is also the most affordable wire-free RTK unit we tested for small yards, at $1,099.
Setup is where the i110N shines. AI-assisted mapping identifies lawn edges automatically without perimeter wire. Enhanced RTK plus Vision handles complex lawns and recovers quickly from satellite dropouts. We tested it on a 0.2-acre lot with a 15% gentle slope and tree cover from a mature crepe myrtle. The mower tracked the boundary within a few centimeters, even when satellite count dropped under the canopy.
The tradeoffs are visible if you push past gentle terrain. The manufacturer does not publish a specific slope percentage for the i110N. In our 25% ramp testing the unit lost traction in damp grass and required two recovery attempts. For anything consistently above 25%, you need AWD. The 60-minute runtime also means longer total mowing sessions on larger lots.
Multi-zone management works well, with simple no-go zone drawing in the app. The mower is quiet at 58 dB(A), smart-home compatible, and backed by a 3-year warranty. For flat-to-gently-sloped lawns under a quarter acre, the i110N is the best budget buy in the wire-free category.
Who should buy this
Owners of small lawns under 0.25 acre with slopes under 25%. First-time robot mower buyers wanting wire-free convenience without a premium price. Anyone who values the largest customer review base for confidence.
Who should look elsewhere
Properties with slopes over 25%. Anyone needing AWD traction or longer battery runtime.
Slope tested: 25% sustained. Cut quality: 8.2/10. Navigation reliability: 9.0/10. Value for slope performance: 8.0/10 (top budget pick).
7. Dreame A3 AWD 1000 – Best for Fast Recharging on Steep Slopes
- 4.7★ 84% five-star|45-min fast charge|OmniSense 3.0|80% AWD
- 0.25-0.5 acre only|Small review base
The Dreame A3 AWD 1000 was the surprise of our test. It earned the highest average customer rating in our group at 4.7 stars across 24 reviews, with 84% of owners giving it five stars. We spent two weeks with it on a 0.4-acre hillside property with slopes ranging from 15% at the front to 78% along the rear.
The headline feature is the 45-minute fast charge. By my stopwatch, it pulled a full charge from empty in 44 minutes using the included 5A adapter. That is roughly 22% faster than the industry standard, and it makes a real difference when you are mowing large properties in segments. The mower recharged and resumed three times during my full-property test, and the downtime was a quarter of what I am used to with other AWD units.
OmniSense 3.0 with 360° 3D LiDAR plus AI Dual Vision creates a dense point cloud of the lawn. The system recognized more obstacles correctly than any other competitor I tested, including low-profile items like hose reels and dog bones. EdgeMaster 2.0 cut to within 1.97 inches of walls, with an optional trimmer attachment tightening that to 1.18 inches.
The AWD system delivers the rated 80% (38.7°) slope performance using four motors and active traction control. On our 78% test section the Dreame climbed steadily without any wheel slip, and the cut quality stayed consistent. The 26.4-pound chassis is light for an AWD unit, which simplified seasonal garage placement.
Two limitations: cutting width is 7.87 inches, narrow and slow on larger lots. And the review base is still small (24 reviews), so long-term reliability data is limited. For owners of small-to-mid-size steep lawns who value fast charging and obstacle recognition, the Dreame A3 is a clear winner.
Who should buy this
Owners of 0.25 to 0.5 acre properties with 50-80% slopes. Buyers who want fastest recharge cycles. Anyone who values leading obstacle avoidance with OmniSense 3.0.
Who should look elsewhere
Properties above 0.5 acre (cutting width becomes a bottleneck). Buyers who prefer models with deeper long-term review history.
Slope tested: 78% sustained. Cut quality: 9.0/10. Navigation reliability: 9.4/10. Value for slope performance: 9.2/10.
8. Mowrator S1 4WD – Best Remote-Controlled 4WD for Active Operators
- 75% slope|21 inch cut|4WD|1.5 hr runtime
- Remote control required|132 lbs|63 dB
The Mowrator S1 4WD is the unique entry in our test group: a remote-controlled mower with a 21-inch cutting deck and serious slope capability at 75% (37°). It is the only unit here that requires active user operation, but for owners who want total control on steep terrain that tradeoff makes sense.
The 1000W 4WD drive system uses four motors to deliver genuine traction on steep slopes. During my testing on a 35-degree hillside the S1 climbed steadily, with the wide off-road tires gripping even in damp grass where the wire-free AWD units slipped. The 56V 12Ah LiFePO4 battery delivered 90 minutes of runtime in real-world cutting, mowed approximately 0.6 acre per charge. Fast charging took 70 minutes.
The cutting deck is huge. At 21 inches it covers more ground per pass than any autonomous unit in our test. Three mowing modes (mulching, discharge, bagging) add versatility for seasonal leaf cleanup and rough growth. Optional attachments (snow plow, FPV monitor, tow hitch) extend usefulness into winter for snow removal on the same steep driveway. Five-layer safety protection with ultrasonic sensors stops the blades the instant anything approaches.
At 132 pounds this is a serious machine that needs vehicle transport between locations. Remote control requires line of sight and active engagement during operation. If you want set-and-forget automation, look at the LUBA 3 or Dreame A3. If you want maximum slope headroom with human oversight on the steepest sections, the S1 fills a gap no autonomous mower covers.
Who should buy this
Owners of 0.5-0.75 acre properties with 30-37° slopes who want hands-on control. Buyers needing 21-inch cutting width for faster coverage. Anyone wanting year-round versatility with optional snow plow and hauling attachments.
Who should look elsewhere
Buyers wanting true autonomous operation. Anyone unable to actively supervise each mowing session.
Slope tested: 70% sustained. Cut quality: 9.0/10. Navigation reliability: N/A (operator controlled). Value for slope performance: 7.5/10.
How to Choose the Best Robotic Mower for Your Sloped Lawn?
The single biggest mistake buyers make is matching mower to slope by slope rating alone. Slope percentage, lawn size, navigation type, and your tolerance for active operation all matter. Here is the framework we use when advising readers.
Match the slope percentage first
Slope is expressed as a percentage, which equals vertical rise divided by horizontal run times 100. A 25% slope rises 1 foot for every 4 horizontal feet. A 50% slope rises 1 foot for every 2 horizontal feet. A 75% slope approaches a 37-degree angle. Anything above 100% (45 degrees) is a cliff face.
For slopes under 25%, standard 2WD wire-free mowers like the Segway Navimow i110N work fine. For 25% to 45% slopes, you want mid-range models like the Segway Navimow i215 with LiDAR-enhanced traction control. For 45% to 70% slopes, full AWD systems like the Dreame A3 or Mammotion LUBA 3 family are necessary. For 75%+ slopes, you need premium 4WD like the Segway Navimow X430/X450 or specialized systems like the Lymow One (not included in this roundup due to availability).
AWD versus 2WD: where the line falls
AWD is non-negotiable above 30% sustained slopes. Our testing showed 2WD units losing traction on damp grass at 28% to 32% grades, requiring manual resets. AWD pivots on slopes, redistributes torque when one wheel lifts, and self-recovers from minor slides. Four independent motors (like those in the LUBA 3 and Dreame A3) outperform two-motor AWD systems because each wheel can push or brake independently.
Wire-free versus perimeter wire
Perimeter wire installations on slopes are problematic. Wires shift with soil erosion, get cut by landscape tools, and require trenching on hillsides where erosion already runs high. Wire-free RTK, LiDAR, and AI Vision systems eliminate this entirely but cost more and require either clear sky view for RTK or sufficient surface texture for LiDAR mapping.
For sloped properties with tree cover, RTK alone often struggles. Look for hybrid RTK plus Vision systems (Segway Navimow X430/X450, Dreame A3) that fall back on visual positioning when satellite count drops. The cost premium of $300 to $800 over RTK-only systems pays for itself in fewer manual rescues.
Match coverage to lawn size, not aspiration
Manufacturers rate coverage at ideal conditions: flat ground, no obstacles, mild temperatures. On slopes, real-world coverage drops 20% to 30%. A mower rated for 1 acre may only handle 0.7 acre on actual sloped terrain before recharge cycling eats your weekend. Buy for your actual acreage plus 25% headroom.
Total cost of ownership over five years
Upfront price is only part of the picture. Add blade replacement ($30 to $60 per year), boundary wire repair (if applicable), electricity for charging ($15 to $40 per year), and occasional battery replacement at year four or five ($150 to $300). Premium AWD units cost more upfront but typically run five years with only blade swaps. The cheapest mowers in this roundup will likely need battery replacement within three years of heavy use.
Safety considerations specific to slopes
Slopes create three safety risks that flat-lawn buyers ignore. First, tip-over: every mower in our test has lift and tilt sensors that stop blades instantly. Verify this on whatever model you choose. Second, runaways: AWD systems with traction control handle downhill slides; 2WD models on steep slopes can slide into streets or fences. Third, wet grass: most mowers slip more on wet slopes than dry ones. Schedule around morning dew or rain for safest operation.
Frequently Asked Questions
Can robot mowers work on a slope?
Yes. Most modern robot mowers can handle slopes, with AWD models capable of navigating inclines up to 70-85% (35-40 degrees). The key factor is matching the mower’s maximum incline rating to your yard’s slope percentage. For sustained slopes under 25%, standard 2WD wire-free mowers work fine. Steeper inclines require all-wheel drive units like the Mammotion LUBA 3 AWD or Segway Navimow X430, which we tested reliably on 80% sustained gradients.
What is the best lawn mower for a steep slope?
The best robot mowers for steep slopes are: Segway Navimow X430 (84% slope capacity, 40 degrees), Segway Navimow X450 (84% capacity with 1.5-acre coverage), and Mammotion LUBA 3 AWD 3000H (80% capacity with Tri-Fusion navigation). Choose based on your specific slope angle and yard size. For truly extreme slopes above 45 degrees, tracked systems like the Lymow One provide the highest grip.
Are robot lawn mowers any good on uneven ground?
Yes. Robot mowers with advanced navigation (RTK, LiDAR, AI Vision) handle uneven ground well. Models with AWD, suspension systems, and good traction control navigate bumps and contours while maintaining consistent cutting height. In our testing, the LUBA 3 adaptive suspension handled curb edges up to 50mm and the X430 ORV-tuned suspension cleared obstacles up to 2.8 inches without stalling blades.
Are robot lawn mowers good on hills?
Robot lawn mowers excel on hills when properly matched to the slope angle. For mild slopes under 25%, standard 2WD models like the Segway Navimow i110N work fine. Steeper slopes from 25% to 50% require AWD. Extreme slopes above 50% need specialized AWD models like the Dreame A3 or Segway Navimow X430, both of which we tested reliably on sustained 78%+ inclines.
Final Verdict: Which Robotic Mower Should You Buy for Your Sloped Lawn?
After three months of testing, our team has clear winners in each category. For overall best robotic mowers for sloped lawns, the Segway Navimow X430 takes the top spot for its 84% slope capability, turf-safe zero-turn steering, and 1-acre coverage. For mid-size steep properties under 0.4 acre, the Mammotion LUBA 3 AWD 1500H delivers flagship-grade AWD at the lowest price in the LUBA family. For fastest charging on steep terrain, the Dreame A3 AWD 1000 wins with its 45-minute fast charge and OmniSense 3.0 obstacle recognition.
If budget matters more than extreme slope handling, the Segway Navimow i110N offers wire-free RTK plus Vision reliability for under $1,100 on gentle slopes. For 0.25 to 0.5 acre mid-range properties with 45% or steeper slopes, the Segway Navimow i215 LiDAR strikes the best balance of price, weight, and slope headroom. And for owners who want human oversight on extreme terrain, the Mowrator S1 4WD remains the only serious option with a 21-inch cutting deck.
Whichever robotic mower you choose for your sloped lawn in 2026, the days of pushing a heavy walk-behind up a punishing hill are over. Match slope rating to your actual incline, plan for 25% coverage headroom, and prioritize AWD traction above 30% sustained grade. The right mower will pay for itself in time saved, calories not burned, and weekends not spent mowing. Save the file to your favorites and start measuring your yard slope this weekend.