So while on vacation down in Florida, I got to meet a few different breeders. One guy kept baby food jars with holes poked in the lids in each tub. I asked him about it and he had told me something along the lines....

Well, back in the old days of snake collecting, we had a lot of WC snakes which would often carry mites. The jar has a little piece of flea collar in it. The snakes can't get to it so it doesn't bother them and if any mites go into it, they die.
He went on to say that it's a great method of preventing mites from taking over and now that everything that comes into his collection is CH, he probably doesn't need to do it anymore.

I don't think I have ever read this in any FAQ. Does anyone here do this, or is it something that has died over the years?