very tiny white Gnat-like bugs fly around when shaking plants

Went out to look at my plants today. They are 4 wks into bloom and look awsome. However I noticed a whole bunch of very tiny white Gnat-like bugs fly around when shaking plants. Should I be worried? If so what can be done to get rid of them? Thanx

Sounds like white flies. Spray with neem. Heres a link from this site that might help. https://www.rollitup.org/bugs/