Things people leave behind--and things they take.

I am always amazed and amused by what people leave behind. I get a lot of cleaning products and yard tools. Mops, rakes, brooms, dust pans, and an assortment of chemicals. Maybe the tenants are trying to make up for not using them in the first place. Or they just don't want to move them as they won't use them anyway.

Of course, the things they take are interesting too. Why take the sink strainers?  Why take all the light bulbs? I supply lightbulbs for every fixture and the plugs and strainers for the sinks and lavs. Anyone care to answer?