I tried doing a couple of searches and couldn't find anything definitive. Sorry if this has come up before and I missed it.

I'm taking on a crested from a friend of mine, and I was going to spray down my extra 20 gal with some provent a mite (his current set up doesn't look the most... sanitary. Better safe than sorry). However, he doesn't drink out of a water bowl, and I was wondering if the PAM would transfer from the tank walls into his system when drinking from daily mistings. The warnings on the label are clear about keeping food and water dishes separate, and with the tank walls being the "water dish" it made me a little leery