You can avoid storage problems by buying only what you need for a particular task and then using up the product. Prevent freezing of liquid products. Most pesticides, and some fertilizers, are liquid and may be subject to freezing. This may burst containers or render the product unusable. Map showing direction of surface runoff and stream flow.
Safe storage is only the first step in preventing contaminated runoff.
When mixing chemicals, try to do it within a washtub so spills will be contained. If you spill chemicals, act quickly to contain and clean up the spill. This is particularly important on paved surfaces. Using more pesticides or fertilizers than you need invites problems. Timing of applications is also important.