| I use neem oil on a regular basis. Neem oil is systemic when used on plants; meaning that when you first use neem oil you should spray once, then aweek later spray again, then spray again in two weeks, then spray once more again in two weeks. After that your plants should have the neem in their system and you should only spray about once every month, or two. Also the reason why they say to add dish soap is because the soap acts as an emulsifier. The soap actual helps the oil stick to, and be absorbed by the plant. Aaron |