Using the correct product is important. Each product has a select group of pests against which it is effective. Additionally, some products prevent insect or disease problems, while others alleviate problems that have already begun. Some products remain effective for weeks after they are applied, while others last only a few hours or less. Certain products are labeled for use on edible plants while others are restricted to ornamentals.
Products also differ in terms of toxicity to people, beneficial insects, and various pests.
Your County Extension office and local nursery professional are two sources of help for making a good decision. By making an informed decision you can get the most benefit with the least risk. Using less of the product than recommended can waste time and money, may result in poor control, and can contribute to development of resistance in the pests. Overdosing can burn plants, increase health risk to people and pets, and potentially damage the environment. Organic controls offer many benefits, such as a tendency to break down quickly in the environment, and they often are the safest option.