THis weekend I gave the mowers a bath and then realized I was out of MoDeck. (stuff works just ok...it does make scraping the deck much easier)...so I say what the heck and heavily sprayed the mower decks with WD 40. Well to my surprise yesterday, after 5 machine hours of mowing in dew and long grass, there was very little build up....what a nice surprise...I'll see how it goes today ...just thought I'd pass this on as I didn't think wd40 had a snowballs chance of working, even a little bit, to prevent buildup...