Honey had hers done in April. Best thing we could of ever done for her! Her breathe is so much better and her teeth are still pearly white. My parents really don't brush their shelties teeth so Honey had 10 years of build up. Mine don't like the brushes but we use the wipes where you wrap it around your finger. Ruutu loves it but we've been doing it to him since we got him at 8 weeks. Honey will tolerate it.