Hit them with the hose. A good stream of water will dislodge those critters and send them on their way.

Dave

Ken,

Hort oil shouldn't be used on glaucous conifers as I remember posts regarding its use on Blue Spruces. I'm sure the same will apply for other blue conifers. Pyrethren however will be just as effective and while you shouldn't breathe the stuff, it's natural. I've heard to just wash them off too but, I would be inclined to right out, kill them.

Spray early in the morning or when it cools off at night. The label will direct you but I know to spray when cool temps are around as that will never damage anything. It's just my own safeguard thought I implement when thinking of spraying, anytime.

Dax

Insecticidal soap easily controls aphids, and is harmless to the person doing the spraying unless they, for some reason, spray themselves in the eyes with it. And yes, high-pressure stream of water will knock alot of them out too.

+oM