What is the simplest way to prevent backflow when using pesticides?

Maintaining an air gap is the simplest and most effective way to prevent backflow when using pesticides. An air gap creates a physical separation between the pesticide solution and the water supply. This means that even if there were a sudden change in pressure in the water lines, such as during a hose disconnect or an abrupt stop in water flow, the liquid cannot flow backward into the main water supply. The air gap acts as a barrier, ensuring that no contaminants can seep back into the clean water supply, thereby safeguarding public health and the environment from potential pesticide exposure.

While using a filtration system or sealed containers contribute to overall safety in pesticide handling and application, these methods do not specifically address backflow prevention in the same direct manner as maintaining an air gap. Regularly checking hoses is also important for ensuring there are no leaks or weaknesses but primarily focuses on the integrity of the equipment used and not on preventing backflow itself.