One of my snake tanks recently got infested with little clothing moths. I don't know where they came from, they just appeared one day!! They're always dying in the water and I've tried cleaning the tank and they don't go away! They don't seem to bother my snake, but I'm just curious where they came from, why they are there, and if they can/will harm my snake (In which case I need to know how to get rid of them ASAP). Any feedback will help! Thanks!