help with flies - the little shits

hi

my kitchen (2nd floor flat) is suddenly overrun with the same type of fly. i kill 10 then i come home from work and there are another 10 when i get home from work. I can't visibly see where they might have laid eggs etc (if that's what they do) but does anyone have any tips on how to get rid of them? i don't wanna pay for a fumigator unless i have to

 

Do you have any fishermen living in your block?</p>

If you have the flys could be from escaped maggots. </p>

Or may be a dead bird in the loft? </p>

Just a thought are there any old people living there who you haven't seen for a week or so?</p>

/poo </p>

 

give your kitchen a good clean