Certified GKH Gardening Expert
We have found neem oil to be very effective in treating these pests. Here is more information: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
years ago I had this problems with house plants, An elderly, but very smart co-worker told me to collect cigarette butts, old chewing tobacco, or any such items, and to sprinkle it around the plant before watering. Bugs do not like nicotine and disappear. Within 2 weeks, no more aphids.