BB is just a franchise with trainers that come to your house. Their go-to techniques are making your dog sit calmly for his food while you pretend to eat from his bowl (way to make you feel like an idiot) and only patting them when they lie down calmly. They obviously mostly deal with dogs that have no basic manners at all. Because my dog was calm and very well behaved around humans, I was told not to give her any attention unless as a reward for recall. There's not many opportunities to do recall in a tiny flat with a velcro dog... I thought only having physical contact with the dog on walks was a tad cruel. Especially as I was not at all explained the how and why if this method. They treated me like an idiot while now I know they were the idiots.
I found clicker training taught me a lot about the basic principles of training.