um your gonna want to eradicate them right away. Not sure what they are, without closeup pics or pics of damge, symptoms. Get hotshot peststrips, works like a charm
Plant vitality plus works well on spider mite killer it also kills the eggs and larvae
but you need to find what they are
or Pest Off Insect spider mite killer Effective against white fly, red spider mite, two spotted mite, thrips, mealybug, scale, adult leaf miners, leaf hoppers and aphids (green and black fly).
Until you identify what type of pest it is there is no sure way to help. Either take and post a pic of them or find a picture of them on the net for us to look at. Some bugs pose no problem at all and can actually be beneficial. So just starting to nuke them blindly is bad advice in my opinion.
You all keep telling him to use this or do that without even knowing what sort of insect/bug it is. First step in pest control is CORRECT INDENTIFICATION. Then plan a course of treatment.
Ok this might sound a little unconventional, but when I had fleas and gnats INFESTING my pots. It just so happened that i accidentally busted out my window, and a lizard crawled in before I could fix it. Ever since then, if i see a bug, the lizards already chompin it down, just leave some water in a cup or something and he'll be fine. (He doesn't even mess with the plants, he stands in the pot and watches for bugs coming to it...)