Had no problem installing product into tires. Product states that it stays in liquid form for ten years. We will see.

I had a stubborn sidewall leak in one of my lawn mower tires. I had tried the "green stuff" before and the tire still leaked - slower than before I used it, but it was leaking air. Using FlatOut, I went a different route. I actually took the tire off first, used FlatOut according to directions and then leaned the tire so that the leaking area of the sidewall was on the ground, making sure that it had plenty of time to settle. I put the tire back on after about 15 minutes, aired it back up and rode my mower around the yard for a couple of minutes. The next morning I checked the tire . . . no pressure loss. Three days later . . . still no pressure loss! It worked! Just to make sure, I did the "soap test" and no bubbles! Happy camper here!

I have a large zero turn mower that is 10 years old and had a slow leak in the front tire. I tried fix a flat but even a full can would barely get any of the product into the tire and would end up oozing around the valve. After a long search, I found FlatOut. I was reluctant at first because it required removing the valve core, which I had never done. (I'm a 60+ year old female.) But the ratings were so high and the fact it was made with Kevlar, changed my mind. And I am so glad!! The instructions were so simple, core valve came right out (and the tool and new core valve is included), the tube that you pull from the bottle, fit snuggly on the valve stem yet was not difficult to put on. I elevated the bottle, added the amount I thought it needed, removed the tube, pushed it back in the bottle, replaced the cap, and then put the new valve stem back in. It only took a few minutes. And no mess! I had put on rubber gloves, expecting some to spill but it's a thick liquid and does not seep out anywhere it's not supposed to! I filled the tire with air and checked it each day for a week to make sure there was no leak before I used it. I then mowed some rough ground that is hilly and rocky and when I was done, the tire was perfect. I was so pleased I did the same thing to the other tire that never lost any air because I didn't want to wait for a leak.
BUY THIS PRODUCT if you are tired of messing with slow leaks or flat tires! I will never use anything else. I purchased a package of core valves and taped them on the bottle so I'll have them when needed! I would give this product 10 stars if I could. It states on the bottle this product was used in the military, so it really has been tested. Thank you FlatOut for a product that actually does what it says!

I had a tractor tire that was flat. I used Flat Out and have used the tractor for 2 weeks without another flat.

FlatOut has to be the best flat fixer on the market. I used this in the two front tires on my D170 John Deere lawnmower. It absolutely stopped all air leaks and was super easy to use. You will not be disappointed in this product.