You usually have to re-dress the top soil with DE after you water. If its vegging outdoors, just sprinkle DE over her and the top of the soil. if the soil is wet and everything around is dry, then that is a huge problem and they will keep going untill they find another moist spot. You want to smother the top of the soil with DE AFTER waterings anyways which is a pain but it helps bring down the population in about a week, you might see them exiting through the drain holes ect, just throw the pot in another pot full of rocks or something so they would actually have to fight they're way into the drainage holes if they wanted to lay eggs. Predator mites and bugs are also good! They will not leave untill your plant is bone clean, if you do go this route, let them do they're job. Do not neem, do not azamax ect..