Here was my thread regarding the diff between gel and spray and salmon or regular. I guess salmon was originally for cats. I got the orig spray and had it for a few weeks. Sprayed on one spray per side two times a day. Her light yellow stains are gone. Dark tartar by her "double fang David Bowie tooth" is still there but much better. I love it. well worth the money I paid for it.
http://www.yorkietalk.com/forums/yor...-question.html
Oh yeah, Nancy's input is in my thread if you wanna know what she said. She is very knowledgeable.