I also like to use dryer sheets, especially for applique. In my home I only use the free and gentle sheets with no dyes or perfumes. They should be used and washed before you use them for applique or string piecing. Then I do believe (only my opinion) that they are fine. Some say the issue is the chemicals that are in the anti-static substance in the dryer sheet. I have read that they are bad for allergies. I have very bag allergies and have never had a problem using dryer sheets for applique. I use them on my clothes to begin with, so the logic of not using them for quilting makes no sense to me.