If I haven't already mentioned it before I love animals! Between my sweet little Chihuahua Lilly and our new fishy friends we are frequent shoppers at Petsmart. The other day at Petsmart I noticed these Mailer bags on my way out the door and stopped to check them out. The prepaid mailer bags are for old Ink jet cartridges. $2.00 for every empty inkjet is directly donated to Petsmart charities to support there lifesaving work. I go threw lots and lots of ink printing pictures and coupons, now I feel great knowing that it will help make a difference in a homeless pets life! You can pick up you prepaid mailer bags at Petsmart the are located near the front entrance.