Hi I was looking for advice please. My 8 year old rescue lurcher has got bad plaque on his teeth and are very dirty. We have tried regular cleaning and it did improve a bit but he really hates it and gets stressed out. I saw an advert for a mobile van that comes to your home and does ultrasound cleaning. Spose to be pain free and not atall stressful. Has anyone else had this done ? Just a bit worried I'm doing the right thing.