Ubbi Disposable Diaper Sacks, Lavender Scented, Easy-To-Tie Tabs, Made with Recycled Material, Diaper Disposal or Pet Waste Bags, 200 count

Q: Would an adult diaper fit into this bag?

I can put two large dog pads in one bag. They are 34"x36". I fold them up tight before putting them in the bag. I would presume an adult diaper would fit in a bag.

Q: Are they moisture proof?

Yes, however, they are very thin, and I sometimes use 2. Not good quality.

Q: Can they be used for bathroom trash can?

Yea you can toss it over there. But I would recommend tossing it separately as different people prefer to make bathroom trash less piled up. Hope this helps.