How to kill the flower greasy insect?

Flower greasy insects generally refer to aphids, killing methods can use brushes or brushes to remove them, or you can use wind oil essence solution (600 times liquid) to spray in the place of long aphids to kill; or you can put 3-4 grams of washing powder into about 100 grams of water, stir evenly and spray the solution on the flowers, generally as long as spraying 2-3 times can completely kill aphids.