Bob and I are working to become as aware as we can about everything we send into the trash stream. We recently turned our attention to the cat litter box. This creates a substantial volume of stuff that goes into trash bags.
We are now switching the cat over to pine litter, and will put all the litter and waste into a large plastic bin. When it gets full we'll put it into the far corner of the back yard to sit for a year or two and then use it on flower gardens only.