Will this work on gnats too?

Good to know. Besides gnats, any chance this might work on house centipedes and ants? My accursed apartment has both, though the ants are summer visitors who should be leaving in a month.

I once dropped/spilled my vinegar dish into the bin. Poor little guys convulsed like they were on a fishing hook until they wiggled no more.

gnats are ussually what are really fruit flies.

Many people are confused and think that they are one and the same , I assure you they are not,. There are some differences for one gnats are of a darker color and have long gangly legs. FF are fast fliers where gnats are cruisers. FF are attracted to any ripe fruit but gnats can be too. Mostly gnats might be in your kitchen sink drain, but they really love soil and will try and lay their eggs in that soil. For indoor plants I use bonide systemic granuals it will kill any eggs if used per direction and it wont harm plants, but I wouldnt use this within 2mo of putting any nectaring plants outside.

Sticky cards around plants might be the best thing to catch gnats.
In this photo you can see by their tan color they are all fruit flies

Heres a comparison image of gnat vs fruit fly if it will let me do this. Maybe this will help clarify the difference for those in doubt.

Try the same recipe without the Saran Wrap. The soap is for surface tension on the vinegar. The fly lands on the liquid and can't get away.

tim45z10 - This may sound obtuse... Do you mean that the same recipe sans Saran Wrap will work with fungus gnats?

Wont work for fungus gnats.

Thanks, hummersteve, for clarifying.