My suggestion is to contact a Project Linus chapter near you and visit with them about quilting the tops that they have from pet free homes. That group has dealt with the animal problem, because the national requirements are for no pet hair/dander to be on quilts. That is not to say that there never is any, but at least the local leaders are very aware of the problem. I don't think they would find it difficult to limit the quilts tops that they would bring to you to be ones that came from pet free homes.