I was using cleaned dye bottles for Ferretone but some people raised quetions about possible residue so I bought new ones at Sally Beauty Supply. The one with a small cap worked best. But.... I left it out on the bathroom counter and the little weasles got up and helped themselves!!! Punctures all over and dumped Ferretone all over the floor and mats. So I have to be more careful to put it away in the cabinet when I'm done with nail trimming. Finely sifted clay cat litter does a great job of absorbing the oil. Carol Owens, Ferret Friends, Tucson [Posted in FML issue 5263]