I just spoke with the owner on the phone after calling to find out when their new facility would open. As we talked I was explaining that the staff at the daycare facility I use in Illinois (www.k-9playtimeinc.com) actively engages the dogs in play and has tennis balls everywhere. She said that toys generally are not allowed (I spoke only of tennis balls, not toys) and that she is seriously considering using "REMOTE SHOCK COLLARS" on the dogs in her care if they are "causing problems."
'Nuff said.
Update:
Some science on shock collars:
http://drsophiayin.com/blog/entry/are-electronic-shock-collars-painful-or-just-annoying-to-dogs-a-new-study-r
On the myth of using dominance to explain dog behavior:
http://www.sciencedaily.com/releases/2009/05/090521112711.htm
A good article on finding good daycare: http://seattletimes.com/html/tailsofseattle/2018722675_trainer_qa_how_to_find_a_good_dog_day_care.html