I use Dr. Brite human products myself for a few years now so very excited to see dental products for my pup. The pen is genius for travel and for a quick dental refresher in between full dental brushing. And since chewy doesn't carry the Waggletooth Worm Finger Brush anymore which was great due to that brush having bristels all around so you don't have to readjust, this pen saves my fingers. However, it doesn't do the same job of full teeth brushing- just in between and travel has you can't successfully be able to brush all your pups teeth. Still trying to find a good toothbrush for my pup but so far regular toothbrushes are the only okay ones for that. All the finger brushes on chewy are too slippery and don't protect my finger from my pups teeth. Happy to have found this in the meantime.