I have just succesfully wiped out a red spider mite infestation with SB Plant invigorator.
I know its been mentioned many times on UK420 but wanted to note some observations.

You really have to soak every mm of plants imo. In one section of my room I did this-The plants looked like they were dipped in a bath of the stuff. Mites totally obliterated in this section.About 5litre per sq metre.

At other end I gave the plants a good surface wetting but did not soak thoroughly.About 750ml.sq metre. Mites were spinning webs again days later.(I then did this section properly-no mites 3weeks later anywhere).

SB recommend treating once a week.

Plants were Chronic at 5 weeks so a lot of bud and foliage.

Plants in heavy flower getting this wet need to be thoroughly dried asap to prevent bud rot I would think. I turned fans and heaters up full and left lights off for an hour. Lights on would burn plants I would say.

All in all I would highly reccommend SBPI. Its a tonic as well so plants lush up after using it. Non toxic and safe to use any time IMO.

Papa.