W.C.
With limits and responsibility. They need to earn their freedom. You need to watch them carefully. And keep them to their promise.
I have to tell you. I once gave my twelve year old son the job to trim the yard with a "weed eater". It took him 4 hours. But he did it. When he had to rake the yard, he liked to balance the rake on his hand. But he stayed out side until the job was done. I am still too patient.