I got little dark brown Aphids on My Standard Mums i Propagated from cuttings last fall. I sprayed them with Seven-all purpose spray. Been spraying off and on for a week now and they are still attacking the new growth!! Why is the Seven not Working? Today i even sprayed the under the leaves. I moved them out to my Garage where it the Temp is 48. Maybe the colder air will kill them. Oh it is Raining out as i Type, moving them out to the Rain , hopefully some will wash off. Any tips on how to get rid of Aphids on chrysanthemums??