For small trash like the bathroom we don’t use bags, just the bin itself. I have reusable menstrual items so it’s not like the trash gets all that gross, maybe the worst is used q-tips, but for that the trash gets a wipe down every now and then. Eventually for the litter box, I’ll just be switching to using the plastic bag the litter itself came in for taking out the old litter, if that makes sense. Just some ideas but every person is different on their needs and routines.