Here are a few things I have found on the forum or have personally tried.
Neem oil (make sure to dilute as needed). I found the diluted spray at HD. Stuff stinks.
50:50 water/isopropyl spray
Captain Jack’s dead bug.
I used 20 shakes of essential oil with a squirt of Dr Bonner’s Castile soap diluted with water in a quart spray bottle. I rotated to a different oil every three days and drenched the plant at lights out (make sure to get the undersides). Oils I used were rosemary, pine, tea tree and mint. Had my infestation cleared up in two weeks. I also sprayed the soil the pots and the tent walls.
Diatomaceous Earth (DE)
Tea made from garlic and hot peppers used as a spray.
I know there were some other products suggested to me but I’ll have to go through my grow journal to find them. I’ll tag a few growers in the meantime that may have other suggestions.
If aphids, mosquitos bits soaked in water 24 hours, strain and feed to kill the larvae in the soil. Yellow sticky traps for the adults. Continue to feed bit water every few days.