Sue - Thank you for that link.
Yes, I figured it was toxic. I don't really want to use it, but was planning to use it as a back-up plan if sterilizing my potting mix didn't work.
I am still determined to sterilize the potting mix and will be doing it trial and error following the links in my second post above. I did dose the current seed cups with H2O2 & water twice when I planted the seeds in them and am hoping that may have helped to kill any gnat larvae. But I will try the gnatrol if I have a problem and mix it outdoors since I do have 4 pets. I am an organic gardener, so chemicals go totally against my gardening style.
The other problem that I have is the potting mix I love is sold at a nursery and stacked outside. The bags have air holes in them, so they may come with gnat larvae already in them. (And I suspect as much.) So I definitely need to figure out a way to sterilize the mix. I can't find this potting mix anywhere else locally. But .... it is such a good mix, that I am willing to try sterilizing it myself!
Thanks for everyone's help!
