Note that you simply do not need to use any toothpaste.  A moistened (with h2o) toothbrush is all you may need.  The truth is, I only use the CET toothpaste that I bought for Robbie being a treat right after I brush his enamel.  He likes the taste of it so I set a tiny bit on my finger for him to lick off after we are completed.If the cat is sle