hey,As your in flower I would recommend, (Im in flower and am using this for spidermites and thrips, but it also kills other insects) Pyrethrum 5EC. Its quite expensive but you get 250ml and its 4ml per litre of water so not too expensive when you think about it.I have used it in flowers/bubs and there are no really bad effects to the flower., If you use it during the day it can burn leaves( thats what they told me where I bought it) so use it after lights out and switch off your circ and vent fans for the night. I didnt think It could be that good but it has killed them all in 2 sprays at a 5 day interval. Worked for me and Im 4 weeks into flower,
Also I have tried neem oil, garlic soap, DYN-A-MITE(which can also be used in flower, I have searched online but it would seem only my hydro shop sells it??i) SB Plant Invigorator(also can be used in flower but i found it not as good as dnyamite, or this pyrethrin 5ec) as well as other homemade sprays, like nicotine,garlic,liquid seaweed(actually quite good at killing insects) to name a few,,,,
,Good luck and kill them all!