cla517 Cheryl, that was a hilarious story! Wow, what a smart little boy.
Mine do not have collars anymore. I bought several different sets, and they showed great teamwork together chewing/pulling the collars off.
As for the bells, it drove ME nuts, let alone the poor guys, so I ripped all the bells off the sets I had bought. Mine are all indoor, though.
They are all microchipped, but I wanted something outwardly showing they were pets, not strays, if something happened, and someone other than animal control picked them up.