Columbo has never been to a groomer. I use Wahl people clippers on his body and a Wahl mustache clipper for his ears. However, mostly I just use scissors and do him by hand. I've been grooming him either on the kitchen floor or on the couch for years, but I decided to order a small grooming table just this morning. Here's the one I ordered:
Master Equipment Small Dog Grooming Table | Wayfair
I'm hoping the table makes it easier. Columbo hates to be groomed and can be pretty naughty.