Always clean your Wedgle Injection unit at the end of your work season to keep it from clogging or corroding for next year’s use. After removing your chemical pack, make your last injections for the day as there is approximately 2.5 ml of chemical retained in the injection unit. Submerge your unit in a bucket of water until the top QC coupler is underwater and squeeze the handles five to ten times. Then remove the injection tip from the unit and replace the dust plugs on both QC couplers. Or for more information on water flushing with the garden hose adapter, click here.