Cash and carry or walmart is going to be the cheapest. It's a gel cleaner for freezers. Suma brand works pretty good. It's about $50 per gallon at Wal-Mart.
Do you mean the floor the freezer sits on or the floor inside the freezer?
I woud think you need to shut the freezer down i dont think you can clean it while frozen if you coud you shoud read directions on product dont rely on salesman
Interesting question, you might want to call around to stores because they won't answer you on here.
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