I got started with Fluid Film cuz of the free sample a year ago. Best stuff on the planet. We have used nearly 20 cans this year. Today I even used it on a zipper on my jacket -- the zipper kept splitting, now it works fine. One use I will refrain from is spraying snow plows with it. All of our plows have a 3 inch layer of snow stuck on them, and we'll be plowing again tomorrow -- hope the snow breaks loose???