Knocking down the door, okay fine. But did they really need to throw in a flashbang? Maybe they could have used some kind of thermal vision to see through the wall for children.
Or, they could like look around the house and spot children toys lying around the front yard.
Yeah, who needs attack dogs or weapons to secure your illegal operation? Just scatter some toys in the front yard and park a mini van with stick figure family in front. Done. No police will ever barge in on your operation as clearly "kids live there"