I'm in a condo, deep in Urban San Diego.

Double bagged trash bag in the back bathroom toilet, twist shut between uses. (That bathroom has a window, which would be open, and the door kept closed. smile ) Tie it off and take it down to the dumpster as needed. Or put it on the back balcony until I can get rid of them.

Ick!
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Okey-dokey. What's plan B?