Chew Proof It! Anti-Chew Spray. Protect your shoes, carpet, furniture, etc. and your pet’s teeth, gums and digestive tract from the harmful effects of chewing! Chew Proof It! is an effective anti-chew spray that is guaranteed to stop your pet from chewing. Chew Proof It! is safe to spray on shoes, furniture, carpet, fences, baseboards, rugs, blankets, bandages or any other surface your pet desires to chew.