Originally Posted by humble1
gnatrol isn't for aphids. it's for gnats. it's specific strain of Bt.
you're just spinning your wheels trying to use it on root aphids.
Your statement conflicts with bergerbuddy's earlier in this thread. I hate when that happens. FWIW, my hydro shop guy pointed me toward a BT solution (not Gnatrol...can't look now since lights are out...will update if I remember) for my aphid issue. Is Gnatrol (BTI) no good for aphids but other BT organisms can be used for aphids or are all BT variants useless against aphids? We need to hash this out more.
A big bottle of Bayer Fruit and Vegetable pesticide solution containing .25% Imid cost me $14 at Home Depot. Pretty cheap.
ETA: No, neither bug will bite humans.