Thank you for the advice, Allan. That's a very good idea about the chip. I'll do that. Of course my first "chip" was a 24 hours clean keychain. Then got my 3 month one, then 6 month one, and finally my 9 month one. I think I'll keep my 9 month chip in my pocket. It took a lot more to stay clean those 9 months than it did one day, although that first day was terrible too.