I think it should be fine. Like Ross said, Neem oil is safe and I know that pyrethrins are quickly degraded by light and wash off easily. Piperonyl butoxide (it just increases the potency of the pyrethrines)although moderately toxic, also degrades quickly. Both of these have a half life of less than 3 days, so within a week there should hardly be any traces of them left.
So unless your cats have a habit of licking/chewing on plants, I think you can bring them in soon. You can always give the orchids a quick shower to remove the last traces!
__________________
Camille
Completely orchid obsessed and loving every minute of it....
My Orchid Photos
|