Has anyone seen these? They're advertised for use as Pigeon nesting material. Nicotine is a natural pesticide, repelling/killing fleas, lice, mites, etc as well. I think this is a brilliant idea and wonder why chicken folks haven't applied it to their next boxes. Is there any reason why these wouldn't be a good idea to use in the coop?
http://www.foyspigeonsupplies.com/nest-bowls/746-tobacco-stems

http://www.foyspigeonsupplies.com/nest-bowls/746-tobacco-stems