Just an FYI the humidity for a molt isnt just the humidity at the time of the molt, but the humidity levels the days leading up to the molt (Keeping the Praying Mantis; Orin). So spraying right as he/she is molting won't really do anything. Have the humidity up a bit when you think its due for a molt. Unfortunately I dont have experience with any of those species, so I can't give you any numbers from personal exerience, but from what I've read of those species is it should be at least 30%; maybe keep it around 40-50%, which is ideal (Google research). In my general experience a little more humidity than recommended is okay. (Except certain species so do your research.)
But the wandering Violin (G. gongylodes) and the Thistle Mantis (B. mendica) I would make my target 40-45%....
