Hydraulic jet agitation is simple and effective as long as the device is installed correctly. Never connect the agitator to the by-pass line of the pump. Use a separate line from the pump output. No endorsement is intended by Iowa State University Cooperative Extension Service of companies or their products mentioned nor is criticism implied of similar companies or their products not mentioned. Many pesticides are so toxic that exposure to even a small amount can kill and adult.
Children can succumb to less.
Minimize any kind of oral, dermal, or inhalation exposure to chemicals. Below are just a few safety precautions. Read the sprayer operator's manual and chemical labels to review recommended procedures for safe use of chemicals and the equipment. Never allow them to play in pesticide-treated fields or in areas where the chemicals may be spilled. This includes areas where runoff or drift may be present.