you havent had problems with top dressing the bits? I got some and if that works I won’t have to buy nematodes then. I seen people use that soil before on here I believe when I use pro mix there was no gnats at all. Seems like if it’s inert there is little to no chance at gnats. If it’s enriched seems to be more likely
In my hands IF I top dress my keg cups right after I drop my seeds and again top dress my grow bags transplanting (as soon as I fill them) ...
I've never had them get a foot hold.
I still watch carefully and the second I see (if I ever do) a single one I reapply immediately!
What I noticed with most bags is I didn't see the little bastards till about a week after I planted.
I also noticed that garden center (Lowes cheapo depot) bags were the worst idk why. To the point you open the bag and they're flying out.
Outside grows I never sweated it cause they're weak flyers (so I was told) and shit eats them.
Indoors is a whole different thing I feel and if I saw that (them flying outta the bag as I opened it) I wouldn't use the bag if there was any other choice.
I've never bought nematodes mostly b/c I didn't know about them.
I wouldnt hesitate to use them if mosquito bits didn't completly wipe them out (as in I never saw one)
Gnatnix was just amazing it so sucks they're gone, you could water right over it but that ships sailed.
That's my experience. It certainly wouldn't hurt to have nematodes on hand. I'm curious how long they're good for in those pot popper thingys.
I'm thinking the trick is don't let them get a foothold and it's all about population density.
If you see one flying how many are already squirming around your MOIST (hahaha had to go there) soil.
That's my results YMMV. If those pot popper things have a shelf life I'll keep them in hand.
if your resusing your soil it I'd say add them.