Hi All, What does everyone do with their empty chemical bottles? I am working at an overseas school where they have previously dumped everything in a cupboard and when it is full, get someone in to take it away. I'm sure there is a better way round this as the company charges per kilo. If I can't get the suppliers to take them back and recycle them, is washing them out (if non-toxic etc) and putting them into the waste bin ok? Thanks everyone!