It appears to me that scale can live ANYWHERE! For plants in pots, this
includes the outside of the pot, esp. the lower edge of the lip ... I will
not be surprised if they are discovered on Luna, or even Mars G.
--
Kenni Judd
Juno Beach Orchids
http://www.jborchids.com

"Sarah" wrote in message
...
Hi everyone!

I just discovered scale on a few orchids that are on top of a humidity
tray.
I'm taking care of the plants with alcohol and neem oil. Do I need to
clean
the tray, too? I really don't want the little critters to come back.

Thank you!

Sarah