Reduce the amount of unnecessary packaging. Buy products that are reusable or packaged in bulk, or buy the large economy size. When possible use rechargeable batteries. This practice will help eliminate toxic metals in soil and ground water. Make sure your vehicle is well maintained and isn't leaking any fluids.
Petroleum products can contaminate the soil and ground water.
If you do need to use products with hazardous components, follow instructions carefully. Any unused portion can be shared with neighbors or donated to businesses and charities or recycled. Do not pour them down the drain or on the ground. Maintain and repair durable products and keep appliances in good working order. This will extend tire life and reduce tire waste.