Wintersewer

I use cherry pits, also. I bought a large bag at the farm supply (Tractor Supply). They are sold as fuel for heating stoves. I think it was $17.

QuiltE

If they are sold with the purpose of burning .... I'd be cautious in putting them into the microwave!

Wintersewer

Why? Wood and paper burn too, and are used for many other things. Just because they will burn doesn't mean that they burst into flames with a little heat applied, or in a minute in the microwave.

QuiltE

I didn't say NOT to do it ... I said I'd be cautious, as in check into it further, research, consider the possibilities, etc.

TanyaL

Are you wanting a suggestion for something that is guaranteed that a rodent will never try to snack on it? Or something that is guaranteed to never ever be combustible? or both? Does it need to have a nice pleasant aroma when heated? Maybe you need an electric heating pad.