I use the the platex reusable liners with the bottles they're made for. The problem I think is you can't push the air out of a regular bottle like the playtex ones cauae they have no bottom, they're just an open cylinder. That being said if u just wanted to use them so you dont have to wash so many bottles I'm not sure, they're really big compared to our other bottles. I would honestly just buy the bottles that go with cause I think they work great to reduce gas & the "bottle" doesnt have to be washed everytime, just the nipple part. HTH