I have just been using up some tearless puppy shampoo I had on hand, and then last week I used Johnson's Baby Shampoo, just because that's what I had available. I'd like to get some good shampoo for Gertie and Ida. They don't have any skin issues, other than Ida's tear stains and reddish chin. So what do you use that is just a "good for them", easy to find, general shampoo? Any suggestions are appreciated.