I tried it and had the same concerns as everyone... Would it hurt my flowers... Worked for me in a small area. I had issues of 80% RH and after a week, its stable and it does not breach 60%. For a 3x3x6 space, it cant hurt unless you pour it into your plants.. LOL I bought another one for my bathroom/lab, where my nutes are. It has kept the smell and dampness out. $3 at Home Depot (small cup version)
I cant say for sure this would work for you, but it did for me and that is what I can say about it.
Good luck!!