A very large number of greenhouses use both Lady Beetles (Lady Bugs) as well as Green Lacewings for Aphid control.
Look also at the soil and nutrients you are using since Aphids are attracted to plants that are being fed high amounts of Nitrogen.

never heard of introducing bugs .... good or bad ... INSIDE the house ...

good luck with that ...

ken

Greenhouse, ken. Greenhouse.

Just curious, what do you grow in your basement? It might make a difference regarding control.

greenhouse in the BASEMENT jean ...

in my world.. that is INSIDE THE HOUSE... lol ..

unless he has some vapor lock second room entry and exit.. and uses a suit that remains inside... etc ...

i suspect there is a reason we havent been told the crop ...

ken

ps: prevention is worth all cure.. next time sterilize your media.. and dont bring the vermin in the house ...

I'm going to go against the trend here, but IMHE natural predators are not a solution, especially in the situation you describe. You will be much better off spraying a soap solution. Good luck. Ian

Won't somebody think of the poor ladybugs.
Once they eat the aphids, they will starve to death. Sounds like a horrible way to die.

Bad karma man. :(