AVID to kill ROOT APHIDS???

IMG_0117.JPG i have a really bad root aphid problem i need opinions if avid will work I've watered in the monteray ant killer but there still infested and crawling around happily. there in 5 gallons and 10 gallons i caught em while transplanting i got em from the neighbor so are my other one gallon og's gunna be infected too? can i spray avid in and on the plants with a heavy dose?? its a 20 by 80 greenhouse so i am scared of contamination
 

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