You need both local and systemic treatment. Bayer's Advantage applied weekly for at least 3 to 4 weeks should do it along with local eradication.

Nick

Thank you very much, Nick! I'll pick some up today and dose them. A quick follow on question - will the Bayer's negatively affect the paphs that are currently in bud?

Thank you again!

Don't know, I'm not into Paphs.

Nick

I've used the Bayers on Paphs when I had mealies on them - no problems.

Brooke

Thank you, Brooke! In that case, I'm going to dose the whole lot of them and try to wipe the beasties out of my collection!

Thanks again, Nick and Brooke!

Have patience, it will take you a month. Wipe and spray weekly, they will appear to come back until one week you'll rejoice that they now no longer come back!

Nick

Absolutely, 3 treatments 7-10 days apart will do the trick.
Get plenty in the media also. I just finished my treatments for the fall... (I had a few mealies on some outside paphs and wanted to be sure they/all orchids were cleaned-up before I brought them all in). I even used this same treatment on the inside orchids in my grow room, I just closed the door and opened the window for a few hours after the treatment.

Weeks 1/2/3 - Water heavily with regular water, re-water with Bayer Advanced, pump sprayer w/BA for all leaves, top and bottom and any spikes/flowers.

I've not had a problem with blooms on paphs when using this treatment. I have 7-10 in bloom/spike currently that the plants and blooms were unaffected by the treatment.

I used this same schedule for a 'serious' scale problem I had 4-5 years ago and it worked like a charm and eradicated all of the scale within 3-4 weeks.

Good luck,

Bob

Totally agree. The only discouraging thing is to look after week 1 or 2 and see them happily thriving. Not so after week 3, by week 4 they are gone.

Nick

I have had some Catt hybrids in treatment for both brown and white scale. This Sunday was the 4th application, what a joy to see clean plants free of bugs (before the final application). I gave them the last spray anyway.

Nick

I completely agree with Nick, Brooke and Bob. And as Bob says, be sure to treat the medium at the same time as larvae lurk there and will only keep hatching if you don't treat the roots at the same time.