If you have a clogged sprinkler head here is another possible issue you’re facing. All of your shrub heads have a filter installed in them. You get to the filter by removing the head and then pulling it out with your fingers. If you do this while the system is turned on be careful that it doesn’t get shot into the air and lost for good! Once the filter is removed you can clean it out in water to get all of the trash out of it. Then simply stick it back into the shrub nipple and screw the head back down. This simple task will fix a lot of your basic issues with shrub heads. If there is still a problem and you need help, send us a picture or video! Have a great day!