I only really got familiar with cleaning companies after I started working at the restaurant I'm at now. I'm not the owner, but I'm basically the manager. Part of my job is making sure everything is clean, both on paper and in reality. We were very careful when choosing a company for tr19 duct cleaning. Unfortunately, not every company provides high-quality service, so finding a good one is a big win. It's funny because now I know quite a bit about professional cleaning companies, yet I've never hired one for my own home.