The problem is on a ficus (scale that I would like to eradicate before the
trees come indoors).

Orthenex is very effective against scale. Use as directed about three times at
weekly intervals. However, you will never get 100% cure. The scale may well
recur next year, especially if the plant goes outdoors for the summer. This is
one case where a preventive spray may be indicated, if you know the tree is
likely to get scale every summer.
Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)

I would not recommend the use of either for trees scheduled
to be immediately from the outside to inside quarters. In this case, go to a
local nursery and purchase a systemic granule approved for inside use.

According to my package & other information, Di-Syston is recommended for
indoor use. There are no fumes to worry about. You just have to make sure pets
& small children don't mess with it, but you keep your bonsai away from them
anyway.

Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)

Iris,

I use di-syston for several pest but find that the odor persists for a week or
more outside. I would be very reluctant to use it inside.

Julian Adams
Adams' Bonsai

In a message dated 8/25/03 7:10:47 PM, writes:
I use Di-Syston. for several pests but find that the odor persists for a week
or more outside.

The granules? If you stir them into the soil, I haven't noticed any bothersome
odor at all.
Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)