Fungus gnats round 2 -- they are back with a vengeance -- seems the mosquito dunks did zero!?!

As of a few days ago, the fungus gnats are back with a vengeance.  Put out new sticky traps and many have been caught.  I can't understand why -- obviously this is a new batch that hatched, but how did they survive the mosquito-dunk water?  (Which I'm still using -- never stopped.)

Anyway, will continue to use the dunk water and sticky traps.