My Yorkie's teeth are almost white since I have been giving her Halo Dental Treats on a regular basis. I also use the Tropiclean Clean Teeth Gel that is available at Well.ca. The two seem to work together very well. She doesn't tolerate a toothbrush and her teeth were getting brown. I have been using these two products since last summer. In March of last year, her vet said that she needed a cleaning but I didn't want my Yorkie to have anesthesia so I tried an alternative way to get her teeth clean. The real test will be when I revisit the vet to determine if my Yorkie still needs her teeth cleaned. Hopefully these 2 products prevented the need for a cleaning.
My Yorkie, Shania, just loves these chews. However, she is 12 pounds and these treats are for dogs 25-60 pounds. It would be safer to give her the smaller size made for dogs 5-25 pounds but you don't carry them. Please keep the smaller chews in stock for the little guys and gals.