I don't think I have ever read it here before, and I'm sure some of you use it already, but I've found the perfect solution for cleaning aspen out of crevices, especially tracks for sliding glass doors on cages such as Animal Plastics...its a can of compressed air. The air burst is super powerful and safe as long as you use it correctly and DON'T use it near your animals. Just thought I'd pass this along. Anybody else have any good secrets they'd like to share.