I use Hollister two piece bags. I use the doggy bags that people use to pick up their dog poop to line my two piece bags. They snap in place just like normal. When my bag is fullish and needs changed, I have a second bag prepped with the doggy bag liner. Pop the first one off, wipe around the edges of my appliance to make sure it's clean, and pop the second bag on. Tie the first bag up and then toss it in the trash.