We have gotten to where we just toss the rings off of the milk jugs onto the floor when we open a new one. Every so often, I'll pick them up and throw them away when I find them or when they get a little too chewed. One time when we moved, we moved a low-to-the-ground couch (too low to vacuum under) and counted 29 milk rings. The really sad part is that we only had 2 cats at the time.

Saphirah also loves q-tips. She will constantly turn the bathroom trash over looking for them and we find them at random places around the house.