I finally had to break down and give the girls a bath.  On a recommendation from a friend, I went to the Barking Lot in Cathedral City.  $17 per dog for self wash.  Individual stations with a gate, worked perfectly for having both dogs in with me at the same time.  A plus when the weather is warm!   They have a selection of shampoos, a conditioner and a blueberry facial scrub.  Towels are supplied as well as brushes, ear cleaner and cotton balls.

It was all very clean and I can definitely endorse utilizing this facility!  http://thebarkinglotpalmsprings.com/