Also, he might have separation anxiety and that’s why he chews up thing when you’re not home. My husky does it for that reason or it could very well be boredom, but the suggestions I gave should help with both. Of course, ask yourself vet for any diagnosis and if it’d be safe for your pup, but in the case of separation anxiety my vet recommended melatonin for my husky. It helps calm them down in a more gentle way than meds.
I also put drops of lavender oil on a towel and throw it in my pups crates and that helps with calming too. Just a few drops are needed so it won’t be too strong for them. Maybe also leaving a tv on or calming music from YouTube.
Good luck let me know how it goes.