I was given this product by a friend. I have been cleaning out kitchen cupboards all week as it is raining almost nonstop. I have Congoleum linoleum pieces as shelf liner.(It's 40 yrs old but nice except it didn't come clean with Comet cleaner & lot of rubbing with plastic scrubber. So I tried original Krud Kutter. 1 spray & it looked new, I couldn't believe it,(I did it over sink & rinsed & replaced in cupboard.) I have so many useless products for cleaning. I thought it would be hard to find, it's everywhere, Wal Mart, Target, Lowes, Home Depot, etc. And it is safe & good to use & didn't make my hands raw. I see on back of it tree sap is 1 of things it removes. Can use on lots of things including carpet & laundry. It's about $6-10. & comes in gallon if you have a lot to do. Has a little smell but didn't kick up my allergies, is non-toxic,biodegradable,non-flammable, non-abrasive so something I will be trying on lot of things. Don't use on paint or varnish as it removes it!!Wonder what it does on shower door glass- think I will try it this morning.Oh, they have a website www. KRUDKUTTER.COM made in U.S. too. Good Luck!!