Maybe repellent is the wrong word.
After a great period of chewing nothing for two months, my old boy has got upset and chewed a nice chunk out of the door when I have been at work (I pop im at lunch and my GF is a teacher who gets in early / tonnes of holiday)
Any magic potions to stop him chewing the walls?
I tried something from a petstore once, or maybe asda.
It was this bitter spray but it just seemed to spur him on, he enjoyed it lol
Just when you think he is past it