Pests

I have what I think is white fly and loads of them.
I am growing this plant outdoors and I intend using it solely for Rick Simpson Oil.
Is it ok to blast it with something to get rid of them if so any suggestions. I am about in week eight of flowering.
Any advice would be appreciated.

Imidacloprid is the only thing I have used and seen to get rid of whitefly, spiral whitefly (not on cannabis). It is a systemic treatment, which means you soak/inject the roots with it. Pest bites into the leaf, ingests the insecticide, adios amigos. YOU CANNNOT use it on cannabis because it is hazardous if consumed and on the label if treating a fruit veggie etc. plant you MUST wait 1 full harvest cycle before consuming any fruits, veggies or flowers. Unfortunately, we do not have that option with cannabis. I used this stuff for 8 years when I was in pest control and is amazing, but in our case, it cannot be used. Since your so close to flower there is not much options for you. Maybe a pyrethrin, but I am hesitant to suggest that considering you probably have some fat buds at this point, and I have never seen a pyrethrin alone get rid of whitefly, ever. Post a pic I will tell you if its whitefly. I treated whitefly and spiral whitefly for years.