Identify the problem (Is it a weed? Is it an insect?) and buy the right product for the problem. Buy only what you need, not extra.
Wear rubber gloves, long sleeves, long pants and eye protection. You may need a respirator, hat or shoes.
Follow warnings on the container for safe use. Read the label to find out any first aid instructions.
Use separate spray systems for herbicides and pesticides so residues don't mix.
Never carry a pesticide in your car's passenger area or next to food in the trunk.
Store chemicals in original containers and out of reach of children and pets to avoid the possibility of poisoning.
Take special care when mixing pesticide. Have another adult nearby in case of accident. Follow label directions precisely. Mix in a well-ventilated area.
When you finish, wash your clothes (not with other clothing) in hot water with strong detergent. Take a hot shower; wash your hair.