These insects are plaguing the hot pepper plants in our greenhouse, and last year they killed the pepper plants that we brought indoors. I haven't noticed them being a problem when it was warmer out, I'm assuming the ladybugs were keeping them down.
How best to deal with them? We have an insecticidal soap that didn't work last year, tobacco plants that I could probably extract nicotine from, or I'm open to buying something if someone has a recommendation.
I live in Alberta, I think we're zone 3, if it helps
I know it's weird to think about, but you can buy them online, too. Just make absolutely sure you are home when they're delivered! I think mantis may help with aphids, if you can find any of them hanging around (probably not).
I would suggest Neem Oil, then. You dilute it in water, and apply in the twilight hours. It eats away at the exoskeletons of the aphids, but it can also eat away at good insect exoskeletons, too. This is why you need to apply only once a day at a particular time, when the good insects are not active. You could just go crazy and kill everything for a fresh start, too. Aphids and Mites will lay dormant and keep coming back, especially in enclosed greenhouse spaces with lots of protection from the elements and outside bugs.
It's been a while since I've seen a ladybug in there, but there might be a few hiding, I don't hang out in there most of the day. I'll start spraying in the evening when I go out. Thanks for the help