We found that the "Nutri Dent" Brand Greenies, made by Nylabone, can be found at Walmart, small size Edible Dental Brush Chews are 12 in a package.
They really do a great job on keeping their teeth tartar free and breath clean smelling. They are 100% natural, quality ingredients like chlorophyll and parsley and no added salt, sugar, preservatives, plastics, artificial colors or artifical flavors.
When they get down to a small piece, I get nervous and take it away, thats when I cut the rest into tiny bits and use them for a treat. They sell the bits seperately also if you want small bits size.
Our girls are happy campers with their "greenies".