I commend Petco for this move. Only a lazy person needs a shock collar for a dog. We have grown as a society and have learned many ways to avoid using them.
I got a shock collar for my dog and the very first day I was walking him with it he was going to “investigate” a skunk. Slowly dialing up the current and telling him to come dissuaded him. Thing paid for itself right then.
Don’t use it anymore as now he somewhat seems to pay attention to me.