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Snap!! I know your problem.In the past I have filled a pump spray with either Bleach / Armillatox / or Jeyes fluid and spray the greenhouse inside and out and leave it a few days until the smell disappears and it seems to clear everything away ( At least I never see anything afterwards but that's not to say I have killed everything.)I like armillatox best of all as it also works as a fungicide and it softens any green algae that is stuck to the glass, then when I go back a few days layer the algae brushes of quite easily with my hose end brush.I might have to use Jeyes fluid this year as I can't get any Armillatox (well at least I can't get it from my usual wholesaler)I hope that gives you food for thought!
What dilution rate do you use with your spray Tee Gee? What a simple method - I wish I had thought about doing it this way years ago!