symphylids!!! thorough unsoil'ing gently then re-soil soilessly before tobacco/B.T. drench? ~»°§°«~

please help! couple girls not looking good. planning to desoil in mild tobacco tea water then repot using growstone gs-2 and coco mix that's been hydrated with B.T.. However, seeing as how stressed out they already are, does anyone suggest attacking first to diminish population enough for girls to stand a better chance of surviving the ordeal? Forgot to mention there's just 2 5-gallon moms that are in mix of who knows what! so you see, this, it's kind of a rescue mission saving them from a dysfunctional home and abusive family so they had a difficult childhood and upbringing thats why am looking after them, yet am unsure little bit still. they're too young to part ways so cullings not an option yet, and won't start hacking limbs off till exhausted all options. ... whattya say?