since anymore than that would put my bank account overdraft! LOL
I like to bath Pita (6lb male neutered) every 3 days. Thats just my choice though. He enjoys his baths and then being blown dry with the hair dryer on low. I use Pantene with the conditioner mixed in. The 2 in 1 kind. I also use corn starch on a soft rag for his face. I just make it real loose and dip the rag in and wipe off his face area around his eyes on the bottom. Not only does it keep his little nose and eyes clean, but it also keeps the fur from staining that dark brown color. I didn't believe it until I tried it, and now I use it on all my fosters. They usually come to me already with the brown stains from the eye boogers and that mixture just cleans the fur right up! Plus the eye boogers don't stick to the fur after that since the cornstarch leaves like a coating on the fur that make them wipe right off between baths.
Yorkies also have a couple different fur types. Pita has the thick double coat. Silver and slightly wavy/curly on top, and blue and straight on the underside. That makes his coat pretty thick and causes him to get a stringy hair look even with routine brushing. I don't worry with flea shampoo anymore since using frontline after his bath. 2 or 3 spritz's from the bottle after he is towel dried and then brushed out and he is good to go!
On the other hand my daughter in law has one that has the thin straight coat blue/silver and it hugs the body close and she only baths once a week and her little boy looks great 24/7 and hardly needs any brushing. She does brush him everyday though because these little guys just love the brushing and combing. I don't know if it's the attention or the actual feel of the brush or comb stroking their skin. Anyway, that was my 2 cents worth!!! LOL