hello, ive got a plant indoors in a closet, in soil, hps 250 watt light. it is in the process of flowering, no orange yet but pistols are large. 12/12 light. in the soil i noticed today that when i water it very tiny white bugs come up on the pools of water then dig back into the soil when the water soaks in. there are a lot. no flying ones, theyre only in the soil. what should i do to get rid of them? ive heard of neem oil but how do you use it? thanks.