Pros: Sprinkler works well on flat ground, medium sized yard if tractor is maintained well.
Cons: Certain guidelines on the sprinklers use must be followed for successful use.
We purchased two tractor sprinklers and found their use is limited. To see a little tractor moving across the yard is quaint and unique. In a smaller area and on flat ground they work best. The concept that they travel along the tack made by the hose is a good idea, but it has it's limitations. If the hose is laid out for quite a ways it can become too heavy and the tractor is unable to pull along the weight of the hose left behind it. When this happens, the tractor simply turns it's wheels and begins to dig in deeper and deeper in one certain spot and fails to travel forward any further. The tractor sprinkler can move along the hose laid out in a gentle curve and continue to follow the hose fine, but it cannot turn a distinct corner.
Our tractors don't always turn off correctly when they arrive at the yellow, plastic stoppers. This usually happens if the stopper is not moving smoothly any longer, due to hard water buildup. The stopper is supposed to hit underneath the tractor and make a knob click off so the water stops coming into the tractor sprinkler unit from the hose. To alleviate this hard water buildup, it may be necessary to clean the tractor parts thoroughly with a hard water removing substance.
The spraying arms above the tractor unit look propeller-like and extend out 20" or so on each side. If the tractor is on uneven ground or enters a hole in the ground it will tip, the sprinkler arms can be stopped by the ground and are unable to rotate. Then the whole tractor unit will be tipped and spraying in one location. The tractor unit cannot correct itself but must be tipped back up and set up again off to the side of the hole. The sprinkler arms (the "propeller" part) has trouble staying fit into the center pole if this happens too many times. Without the sprinkler arms the tractor unit is simply no good.
Because the tractors are quite expensive to begin with, it can be expensive to replace them when they stop working.