We spray the toilet & the garbage more than daily. We even sprayed the grounds & underneath the trailer, & still the gnats persist. Is there any way to get rid of them once they’re inside the house.
I use a couple of short, fat used prescription bottles. I put about an ounce and a half of apple cider vinegar in them and about 3 drops Dawn dishwashing liquid. Then I stir them enough to mix the soap in without making bubbles.
I set 2 or 3 of them out without the caps on them. The soap helps to break the surface tension of the vinegar. When fruit flies or gnats try to land on the surface of the vinegar to get a sip they go right under and drown.