I had many of my plants out on my porch last summer (potted avocado trees, potted miniature roses, some herbs). Unfortunately, when I brought them into the house in the Fall, I also brought in some very small flying insects which lasted months indoors. Not swarms or anything – but enough so that I want to try to avoid doing that again.
It there a way to prevent this occurring? I didn't vigorously shake the plants though they must have been shaken a bit while being moved. Is there anything more I can do?