Are regular flies a problem?

If you’re applying organic material I can see thats why, are u sure they are normal flies? get a good close up for bug Id confirmation
Yes they are big black flies They look lotta different than the fungus gnats ..it's weird tho they come and go haven't seen any in the last hour ..and I do I sit there and look at my plants all day doing Pest Prevention lmao...ready to set up my tent
 
I even noitce from my yellow traps will also catch the regular flies , I use the traps mainly to look for fungus gnats but ethier way when I first top dress and FG aren’t present ill get a bunch of reg flies catched in those traps. ethier way I suggest if using organics as a good IPM and knowing ur pest pressure/population to have yellow traps ontop or on above the medium
 
I even noitce from my yellow traps will also catch the regular flies , I use the traps mainly to look for fungus gnats but ethier way when I first top dress and FG aren’t present ill get a bunch of reg flies catched in those traps. ethier way I suggest if using organics as a good IPM and knowing ur pest pressure/population to have yellow traps ontop or on above the medium
Ok I have them below the medium wedged In my plant risers, still catch allt but I'll try above
 
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