I need some advice on a couple of things to keep my lawn looking great. First my kids keep breaking or taking apart my sprinkler heads with the end result being a water geyser spraying all over the yard and wasting water. My landscaper suggested I install a product called vertical stop I guess it prevents the water geyser. After researching there website located at www.verticalstop.com I have found no other product simular? Has anyone ever used this and what was the cost of it installed as a aftermarket add on? Thanks in advace. Lawndude..