Well after a few days of yellow stickys, there is a few gnats on ea trap.So they've set up shop already.Canada so all I got is mosquito dunks that Ill water/spray the top surface.Soil is damp already.Ill top it off with 2" of sand and put weights on the lid.
Friggen gnats!
If you're letting the totes sit for an extended enough period of time, the dunks shouldn't be necessary and the sand will remedy your issue. Gnats won't be able to get in, or out, they'll just die out in the soil.
Dunks are always good to have on hand though, that's for sure.
Hey myke, I know you are in the process of making your own EWC. I don't keep any on hand myself. But I did cure a gnat problem in late flower by going out to my yard, digging down until I saw earthworm holes, then took a scoop of that and top dressed.
Within two weeks, all gnats were gone.
I don't know if that's an option for you or if it will for sure work, but it worked for me the one time I tried it.
That is amazing that you can legit just go in your backyard and find earthworms and castings if you dig enough.
I don't know how I ever lived and gardened without homemade EWC. As with anything else in life, nothing beats fresh, and homemade trumps store-bought. Sure, store bought compost/EWC is definitely better than nothing. However, much like bags of soil, they've been sitting for who knows how many weeks/months at a time. Most of the life has gone dormant, or even died off.
Fresh castings are filled with tons of things that make it difficult for bad bugs to ever set foot in your garden, let alone take control.
I recently discovered fresh EWC has chitin in it naturally, turns out the chitin enzyme is a natural part of the earthworm's digestive system. Awesome.
Fresh EWC also comes with predator mites, soldier flies, springtails, silverwings, and even centipedes occasionally (hate those fuckers).
Any outside pest will have to compete against all of the aforementioned bugs, but also the chitin found naturally in the castings. And that's not even accounting for any predator wasps that may happen upon your garden.