"Just like with the mice if anyone has any tips to get rid of them it would be very welcome."

Lol!
Been there done that.
Welcome Exyle!
I am trying to get rid of them for 8 weeks.
All it takes is 1 tiny piece of fruit, or 2 drops of milk somewhere and they are back.
I don't even use my garbage bin anymore.
I walk to an underground container in front of my house and throw it in there.
I think there are only 4 fruit-flies left. Down from 50.
Good Luck!
😀