Mixtures of Pesticides Pesticides can be mixed with other pesticides or with fertilizers if the resulting mixture does not reduce safety or effectiveness. Incompatible mixtures can increase the toxicity or hazard of the pesticides to the applicator, the crop, or the environment for physical or chemical reasons. Undesirable physical changes may cause materials to precipitate as a solids, formation of separate layers, or other visible effects. Undesirable chemical changes may result in new compounds that increase environmental hazards, reduce the amounts of active ingredients, or cause plant injury. Since pesticides are poisons designed to destroy pest species, there are many hazards associated with their use.
Pesticides can harm humans in different ways.
Exposure to pesticides can be through the skin, mouth, eyes or lungs. Hazards to nontarget organisms and environmental contamination are also important concerns. All pesticides should be handled with care to avoid unnecessary exposure. The label is designed to ensure safe use, so be sure to always read understand and follow all label instructions. Use pesticides only when they are necessary.