Today is too hot to treat but as soon as the temp drops a bit I want to eradicate the buggers! What is best to use on impatiens? I remember a while back reading that they are not that forgiving when sprayed with garlic-soapy water/insecticidal soap... I do have some neem though. They are in containers on my terrace so a forceful shot of water from a hose is not an option.

Any suggestions will be much appreciated!