Adjustable nozzles let you change the pesticide spray pattern to accommodate the treatment area and the type of chemical in use. In some cases, a direct stream of chemical is most effective if the target is small. For example, a direct stream works well if you are targeting a specific weed surrounded by desirable plants. You want the herbicide to only come into contact with the undesirable plant to avoid damaging the desirable plants. A broad spray pattern on the other hand is effective for applying insecticide to the exterior walls of a home where you typically want to cover a large area quickly. Proper spray control is the most environmentally safe way to treat against pests
Sprayer wands are an important piece of equipment because they keep the chemical farther away from your body while spraying and allow you to reach areas beyond your arm's length. A home's foundation or weeds surrounding the outer perimeter of a flower bed are examples of a places that a sprayer wand can help you reach.
Safety Tip: When possible, avoid spraying chemicals overhead. While sprayer wands allow you to reach higher areas, often times the chemical will fall back on you in the process. Always wear safety goggles, a respirator, gloves, and long sleeve clothing when spraying in areas where chemical exposure is possible. Avoid skin and eye contact with all types of herbicides and insecticides.