<human>:  How do I get rid of aphids on my garden plants?
<bot>: The most effective way to get rid of aphids on garden plants is to use an insecticidal soap, which will help smother the aphids and break down the waxy protective layer around them. If the infestation is severe, you may also need to spray the plants with an insecticide, such as permethrin or malathion. You may also want to consider using natural products, such as neem oil or garlic spray, that can help repel aphids and discourage them from coming back.