Locate the main shutoff valve on your irrigation system. It is between the main water supply to your home and the sprinkler controller. Alternately, the main shutoff is located outdoors near a faucet bib. The main valve may be in a box in this area to protect it from the elements.
If manual cleaning is not performed immediately, instruments should be placed into a container and soaked with a detergent, a disinfectant/detergent, or an enzymatic cleaner to prevent drying of patient material and make manual cleaning easier and less time consuming.
Recommended procedures for manual cleaning are to first soak the instrument in a tepid or lukewarm water or detergent bath for at least 10 minutes. This step softens and loosens much of the soil that may have dried on the instrument between the time it was used and the time cleaning has started. The duration of the soak depends upon how much soil is on the instruments and how long the soil has been allowed to dry.