Errr...scale is back.

[POLKA]

I use imacloprid/merit too.
don't use too strong
bayer complete systemic rose care product at 1/3 to 1/2 strength. Full strength can cause some troubles in new growths, and or new roots. It works well on the brown SanJose scale, but not so well on the white Boisduval (sp??) scale.

Also remember that dead scales do not fall off, and go away. they must be removed. The Eggs and newborns are under the scale -- another reason to remove them the first time while or before spraying in order to kill them. Just removing the adults kills them, the spray is for the crawlers, etc.

Take care
happy killing <grin>

Rex aka POLKA