So bax used to be raw fed and he had the most gorgeous pearly whites. Ever since i switched him to kibble they've gotten worse and worse and now they are downright gross. I've tried chews with him but he's not really a chewing kind of dog and has stopped accepting any of the brands ive tried. I've desensitized him enough to tolerate me putting my finger in his mouth and poking at his teeth for a few seconds. What kind of tooth brushing products do you guys use?