Use use 1 tablespoon of peroxide to one gallon water and pour in soil. If they are on the roots itll start boiling air bubbles and you will see where they are. Do that a couple times in a 2 week span.
My chem dog #4 has baffled me everytime I grow it. I get frustrated trying to look at the red hairs but the trich are still mainly clear but only a few cloudy. It seems as though it still needs more time. Hopefully I'll figure it out !