If you are using the wand on town supplied water we suggest once a week at least unscrewing the end of the nozzle if you have the type with a screw in mesh, This will prevent the screw from welding shut due to the calcium in the water which dries like concrete. If the nozzle begins spraying in weird patterns or is not as soft anymore you can either remove the head or mesh depending on what type you have and soak it overnight in vinegar and bi carb soda. this will free the fine holes back up which can become clogged due to chemicals in the town water.