LawnMutt Soil Amendment for a Large Lawn (1600-3200 sq. ft.) 2 Application Treatment For Dog Urine Spots In Lawn.

LawnMutt Soil Amendment for a Large Lawn (1600-3200 sq. ft.) 2 Application Treatment For Dog Urine Spots In Lawn.

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LawnMutt is an easy to apply, liquid soil amendment, for dog owners. Dog urine contains high levels of urea nitrogen. High concentrations of urea can damage a lawn's ability to absorb moisture. Healthy soil converts urea nitrogen into more lawn-friendly nitrate nitrogen that's easier for the lawn to absorb. LawnMutt repairs and enhances the soil's health, enabling it to process higher levels of urea. By metabolizing the excess urea you can prevent dog urine spots in your lawn. 

Are you interested in repairing and preventing dog urine spots on your lawn? Preventing urine damage is a process that varies from lawn to lawn. Our LawnMutt Soil Amendment in combination with one-on-one support has helped thousands of customers prevent urine damage to their lawn. We would like to help you with your lawn.

LawnMutt is a liquid concentrate that is best applied with an applicator that goes on your water hose. Our LawnMutt 2 Application Pack is available with or without a reusable Hose end applicator.


If you are new to our products we would love to help you get started. We encourage all our customers to take advantage of our Exclusive SoundStart Program.


This Large lawn 2 pack is formulated for lawns 1600-3200 sq ft. That would be the size of a large home with a lot size of 3/4 to 1 acre. 

Not sure the sq ft of your lawn? For reference, look at the pictures above for size comparison. The pictures above are of lawn areas approximately 1600-3200 sq. ft.  If you are still unsure email me a picture and I should be able to recommend a bottle size. My email address is

If your lawn is larger than 3200 sq. ft. we recommend dividing the lawn up into 3200 sq. ft. sections and treating each section separately. The applicator bottle when full will cover up to 3200 sq ft and if applied to a larger area will over dilute the product and decrease its effectiveness.

The application is as easy as watering. Simply pour the contents of one 16 oz. bottle into the applicator bottle and add 16 ounces of additional water. Set the green dial on the applicator to 2 oz. setting. Apply to the lawn area evenly until the applicator is empty. Water for 5-10 minutes after to saturate down to the root zone. It is that easy. no additional measuring or worrying.  

Repeat the process with the second bottle 3-6 weeks later to continue the repair process.  

After the second application, you should start to see a decrease in the number and severity of new urine spots as well as the shrinking of existing dead spots. 2 applications are usually enough to start the repair processes on all but the most severely damaged lawns. Severely damaged lawns can take a bit longer and a few additional applications. 

Due to the volume of urine applied to most lawns, regular applications every 6-8 weeks are recommended and prevention will get better with each application. 

LawnMutt is safe for people and pets when used as directed and no special safety requirements are needed.

Dead spots can be reseeded 7-14 days after application. 

To help keep your applications on a regular schedule we now offer a Subscription Service.  

 Depending on the severity of the urine damage 1-2 applications may not be enough to completely stop the new urine spots. To ensure all our new customers are satisfied with their results, check out our exclusive SoundStart Program. 

Customer Reviews

Based on 43 reviews

Have not seen any improvement to date.
Second application went down about 8 days ago. No new length to my existing Zoysia.

Joyce Evans (Denver, US)

Need advice
I think I missed the boat
It’s now freezing at night and night time temps going into teens next week
My garden soil keeps compacting even after years of adding peat and coir
I think it’s maybe too late to try to add anything now
When can I add your products to my garden

Kevin France (Plano, US)

I would HIGHLY recommend LawnMutt to anyone. Jeff the owner, will give you customized service, GUARANTEED! Jeff is about YOU getting results, I can attest to that!

Kathryn M Doig (Rapid River, US)
Amazing results!

There was an area of our lawn where grass had not grown for years as it was our dog's favorite place to relieve herself. When she died last fall, I decided I would try to rejuvenate that area of grass come spring. I spent time reading on line with so many people suggesting that the problem was the pH or other things. But with my scientific background I knew the problem was nitrogen, which like fertilizer, kills grass when too highly concentrated. I also knew that nitrogen fixation improves plant vigor. When I found Lawn Mutt I was impressed with the scientific approach. So I gave it a try. I wrote a question and [****] gave me versy specific suggestions on the product to purchase and how to apply it to this relatively small area before seeding. I followed his advice, used good quality seed and mulch and voila! By mid-summer (shown here) you could hardly tell where I had seeded and now you cannot tell at all - except that the area is slightly greener than the area around it. I am planning my lawn rejuvenation projects for next summer now. Great product.

Devore Culver (Westbrook, US)
Happy but still waiting

We have now applied three rounds of Lawnmutt and will apply a fourth round in another week to get as much in place before the ground freezes in Maine. So far, we have seen some impact on the incidence of pee spots, but with three dogs, it is hard to say that we have no new spots to contend with since the treatments began. I think a follow up response will be in order toward the middle of October.