I would appreciate some advice please. We bought 2 female Guinea pigs about a month ago from pets at home. They are about 6 months old and have never been handled. In the shop apparently since babies. If I am able to catch them they squeal, scratch, bite, chatter their teeth and struggle. I have had piggies before but always handled from an early age. I appreciate their claws will soon need trimming and as one has quite long fur, she may need a trim. They will come to the bars for food but will not be handled. What is the best course of action please.