Most of the books on my shelf are books that I was given and I can't guarantee if they were in a smoke free home before mine which is a smoke free home. I am currently offering an unlimited 8-1 on all my children's books so that everyone can enjoy their summer reading and 4-1 for all adult books. I have alot of great books on my shelf. Currently I am able to go to the post office Tuesdays and Saturdays.