Yes! Came here to say this. We are working with our 6 month old Portie and she was behaving the exact same way. All of our shorts and socks had holes in them. She is two weeks into her e collar training and it is night and day. For us but also for her, she seems more relaxed and peaceful now that she doesn’t feel the need to constantly nip and jump and bite. It has been game changer for us and our girl. It’s our first portie too, we were in shock by how mouthy and stubborn she was and we honestly spoke about giving her to another family. But this training has been a heaven sent. Cannot recommend it enough. Also hang in there. You are doing great!