My three (3,4,and 5) have free reign of the main level when I am home, everything is puppy proof. But when I am not here, some parts of the house are closed off to them. If it were only one furbaby, I probably wouldn't do that, but I feel better about not giving them an opportunity to get into any sort of trouble as a group
Sometimes it only takes one to instigate the other ones into something they don't "normally" do, lol.