VetriScience Laboratories- Perio Support, Dental Health Powder for Cats and Dogs, 4.2oz Perio Support dental formula includes Natural Zeolites that help prevent plaque from forming and sticking to teeth. Perio Support dental formula has been designed for convenient use. It is a powder that is easily sprinkled over normal meals. Perio Support attacks bad breath where it begins, in the gut. Perio Support includes probiotics to help manage odors from the inside out. Veterinarian Formulated. Veterinarian Recommended. VetriScience products are manufactured in the U.S.A. and are backed by a 100% Satisfaction Guarantee.