Fungus gnats fear this plant the most; place it where potted plants are clustered and you can even skip the insecticide

Once summer arrives, the most annoying thing is probably the fungus gnats in the flower pots, right? They generally love to suck the roots and stems of flower seedlings, and after they finish sucking they go on to suck other flowers. A few carefully tended pots of flowers get infested by them, but fungus gnats fear "this plant" the most; place it where potted plants are clustered and you can even skip the insecticide!
The plant that fungus gnats fear the most is actually the petunia. If you have petunias at home, you'll know that the fungus gnats on the flowers around the petunia all disappear. When you look closely, you find many black dots on the petunia, and it turns out they are all fungus gnats. Could it be that petunias eat fungus gnats? Actually no, it's just that its branches secrete a lot of sticky mucus, and when fungus gnats touch it they get stuck until they die.
Besides petunias, there is actually another flower with the same effect, and that is verbena. Doesn't the name sound very distinctive? After fungus gnats touch the sticky mucus on them, it is hard for them to escape, and more and more fungus gnat corpses accumulate on them. If not cleaned up in time, it may cause harm to the flowers, so although we skip the insecticide, we still need to put in some effort to clean it up.
If you think these two plants simply cannot get rid of the fungus gnats in your home, then you can try these two methods: using cooking oil as a lure to kill the fungus gnats, and using detergent to trap and kill them. Simply pour an appropriate amount of laundry powder into clean water, stir it evenly, and place it around the flower pots. The next day the water surface will be covered with fungus gnats. Have you learned these methods for killing fungus gnats?