Slave labour LOL They're sitting on a tire which is on top of chainlink fencing which I use to spread my horsey deposits. They're my weights to hold it down and let me tell you with a hard dry clay ground after horses have been running on it when it was wet... it is BUMPY! Takes a long time with our tiny tractor and it is was HOT (28C is 82F) and seriously dusty dirty. Had to let them try driving on their own to make it a bit more fun
Isn't child labor illegal in Canada?