My pom did that when we first got her. She would sleep in the lining until one day as she got bigger she ripped thru it. SO my husband tore it all off she was so upset!!! So then when I got Cali she would chew on the exposed wood frame. I went to Koh;s and found a box spring cover that is made out of sheet material and fullyencloses the box spring. It has a zipper on one end. I think it was 50.00 on sale but well worth it. They are such stinkers |