Try to protect all exposed portions of your skin. The best times to spray are early in the morning when the wind is calm. Do not spray in high wind conditions. You may want to close up your house so the spray does not enter. Spray close to the plant and make sure you spray on all surfaces of the leaf.
Many pests live underneath the leaf.
Keep the spray away from children, animals, and water sources, such as fountains and ponds. Because pests can become immune to a pesticide, alternate using different materials. If you planned right, there should not be any leftover materials. Do not store mixed pesticides. Clean all spray equipment according to instructions.