4 - 5 Sound fertilizer and pesticide management practices are designed to give the user knowledge to supply lawns and gardens with a specific nutrient or pest control. Proper handling and application practices are essential to maintain high groundwater quality. Failure to follow these instructions may lead to ineffective treatment and may increase the risk of groundwater contamination. Be sure to read all label warnings carefully.
Some products list specific warnings with regard to surface and groundwater contamination.
Mix Accurately - More is not better. Overdosing will not lead to healthier lawns or do a better job of controlling pests. Application rates exceeding label recommendations will increase cost of application and the chance of contaminating groundwater supplies. Spills should be avoided and should be cleaned up immediately. When mixing lawn and garden chemicals with a garden hose, a drop in water pressure can cause the entire contents to be back-siphoned directly into the water supply.