So i bought a new Ex-mark radius x zero turn with mulch kit in December and also bought a gallon of Gempler's grass shield for $40.00 from amazon. Not very many reviews on the stuff but thought i would take the chance for reducing grass buildup under the deck. After 5 mows....(the last mow was a little damp).... i started up the mower and engaged the deck and had alot of smooth chunks of grass come from underneath the deck. This stuff makes the clump fall off on it's own. Should definitely make end of season cleaning a lot easier. Best part is after 3 spray on coatings under the deck i don't think i will ever go through the rest of the gallon in my lifetime. Just my .02 cents.