Like a lot of creatures, flies love the heat - and the chances are they've been bothering plenty of people in Ireland in recent days.
And with the temperatures set to rise even higher over the weekend, don't be surprised to see a few more flies darting around the place.
But there are a number of reasons - and a number of solutions - for the problem.
If you seem to be struggling with an infestation, or you just find them annoying, don't worry, we're here with some easy solutions
Make sure all food waste is correctly disposed of - in a bin with a lid
This is one we've all been guilty of at some stage or another.
The pizza box we've been too lazy to clear up, the half eaten spice bag that sits on the table or even the one or two bits of potato left after a Sunday dinner.
All of them are flashing signs for flies to land.
Keep your doors closed
This one is slightly less workable in summer months as the heat can be overwhelming indoors.
But if you can afford to do it, blocking out any entry points will save you a lot of hassle.
Dabbing a few pieces of cloth or paper with eucalyptus oil and hanging them near doorways and windows will repel the little buggers.
Do you grow your own herbs? If you've got some mint, you're in luck.
Flies don't like mint, so dotting a few sprigs around the place should fix the problem fairly sharpish.
Flies love sugar (which we'll get to in a second), so cutting up a nice orange and leaving the peels on a plate should stop them from buzzing around and instead settle them on the peel.
Once they're settled, simply lift and toss em out!
A homemade trap
Empty a two litre plastic bottle and wash it out.
Next, cut off the top third of the bottle and line the bottom two thirds with a sugar-water mixture.
Once that's done, turn the top third upside down and place it in the opening at the top of the bottom two thirds.
The flies will be able to get into the bottle - but won't be able to figure their way out.