Are there any webextension ready (Fx 57) cookie managers that support *auto* deleting temporary cookies & exceptions (ala Cookie Monster), or only the cookies of permanent session exceptions, once all tabs for a domain are closed? Cookie AutoDelete https://addons.mozilla.org/en-US/firefox/addon/cookie-autodelete/?src=search# will delete "gray listed" (~ temporary) cookies when browser closes, or manually - if you remember, after every site you allow temporary cookies, then close tabs, but don't close the browser. Some days, that would require remembering 100+ times to manually click clean cookies option. That won't happen. If there aren't any such addons, I may as well accept that temporary cookies I was forced to set to access sites will stay around till I close the browser or eventually remember to manually clear them. Maybe I could set up some calendar reminder to pop up every 5 min.: CLEAR COOKIES! Thanks.