Here are a few very basic guidelines. Chemicals cost money both to buy and to dispose of. Often disposal is considerably more costly than acquistion. Be very careful of what you put in the sink. This is a very sensitive topic, so if you have doubts, DON'T. Ask for help.
Dust is more mobile than coarse particulates and unhealthy almost regardless of composition.
If you generate dust, clean it up with a wiper dampened with isopropanol or water. Roll with wiper into a small ball and pull your glove off over it, sealing the wiper inside. Avoid using a conventional vacuum cleaner except as indicated. There is a HEPA vacuum in 157 Cory for unfriendly dust. When to Enable Equipment Equipment should be enabled the moment it's unavailable to other labmembers and disabled when others can use it.