Instead of using chemical products for landscaping activities, try amending soils with compost, weeding by hand, and replacing plants with native cultivars and climate-appropriate plants. These practices can help prevent excess fertilizers from reaching the storm drain system and entering bodies of water.

• Using herbicides, insecticides and fertilizers sparingly can save you money and help lower the chances of rain washing these chemical products into the storm drain.
• If feasible, targeted spot treatment is preferable to broadcasting or using a spray truck. Avoid over-spraying and off-target applications.
• Mix and use only what you need.
• Select a pesticide specifically for the pest to be controlled.
• Whenever possible, implement an Integrated Pest Management (IPM) program. IPM programs use a range of tools, including biological and agricultural controls, to manage pests, promote healthy plants, and reduce risks to human health and the environment.
• Use all lawn and garden products according to the manufacturer's instructions. 
• Avoid applying insecticides, herbicides or fertilizers before an expected rain event, or during high winds.

• Properly handle and store chemical products in accordance with their Safety Data Sheets (SDS) and ensure storage areas are designed to contain spills.
• Never dump chemicals down storm drains, sinks, sewers, gutters, or onto soil.
• Have spill cleanup materials readily available and use dry methods to clean up spills. Keep a spill kit nearby containing personal protective equipment  and absorbent materials (sand, kitty litter or sawdust). Cover spills with absorbent  materials and put contaminated material into a sealed plastic bag or bucket with a lid. If applicable, dispose of it as hazardous waste.