Little black bugs on window sill

[JordyStod]

Hi,

Can someone do me a favour and identify this little black flying insect please? Apologies the image doesn't show them that well - they are tiny but black and winged.

It appeared around the time we placed some sunflowers on our window sill - despite chucking the (dying) sunflowers in the bin, the insect has remained for a couple of days.

I regularly squish them but they keep reappearing on the window!

I have tried cyder vinegar traps too with no joy.

Will they leave of their own accord?

I also have a large monstera by the window but they don't appear to be attracted to it...

Many thanks for your help!

 

[Oliver Buckle]

As you say difficult to see, but the description fits the sort of gnat whose larva lives in damp compost, what is the monstera potted up in?
Water it with a mix one part hydrogen peroxide (3% household, not the strong stuff) to four or five parts water, that should kill the larvae.