I put my meds in there instead of the chamber. I don't use the white plugs that come with the canisters though. Basically, I got sick of fighting with the lid not opening wide enough to make cleaning the one side of the chamber easy. So I did a final really good clean of my chamber and started using the canisters because I can just soak them in some Iso along with my screens and tube. And use a Q-tip with some Iso to wipe out the chamber and surounding areas quickly. Makes cleaning easy-peasy!