The Ball Collector is an obstacle that is designed for the Putt Putt course rentals. Typically, placed on the last hole, it has 3 targets like the Skee Ball mini golf obstacle. However, unlike the Skee Ball obstacle, only 1 of the target holes will collect your putt and offer a stroke reduction. The other 2 targets, the putt will enter the obstacle and then roll around inside and then just as you thought you had successfully completed your round of putt putt, your golf ball comes out and returns to you. If you see the Ball Collector placed on a 9 hole putt putt rental, then we suggest that you defer and let the other players of your foursome go first. This way you can see which is the proper target to aim your putt.