Well, we just took in 2 in the past month. They just show up and decide they live here. The 1 previous to these 2 simply showed up one day and walked in the house and never left.
Did you wear them around the house for a week? I just ordered myself some, and everything I read was that you have to wear them for about a week, and then they fit like a glove. Never having owned a pair, I can't say for sure, but that is what I read and hope it proves true.