Petsmart Coupon Code for October 2009! By Coupon Dad on October 18, 2012 - Leave a Comment Petsmart Coupon Code for October 2009! New coupon code for PetSmart.com for $5 off any purchase of $25 or more! Just enter coupon code: OCTPERK at checkout to get your discount. This offer expires on 10/12/2009!