DW seems to have more house plants every year!
In the summer, they go outside. Water, that is about all they get until the fall when many of them are re-potted with fresh soil. However, a lot of the old soil comes in the house with the plants. So, what comes in with them? Fungus gnats

.
We have the worst outbreak of gnats of all time, this year. However, there are hardly any flying around to be noticed

. You know, while you are having dinner and they are suddenly right above the fork. Or, you finally realize that there is an airborne speck, flying in front of the teevee screen.
Not this year! DW complained that she only had the choice of the larger sticky traps at the garden center but I don't see that it slowed her down in getting one in, at least, every other pot! I complain that there is nothing attractive about house plants with 5 by 8 yellow cards perched behind them ... splattered with fungus gnats ...
But mostly, I keep my mouth shut. Never know when you might inhale a flying bug if there were many in the air and fewer stuck on yellow sticky traps.
Steve