7. Rotten fruits at home
You better eat your fruits before they become overripe. If you notice that the fruits will probably not be eaten, just get rid of them. However, don’t put that brown banana into the rubbish bin as it will be somehow impossible to prevent fruit flies from coming down for the “prey”.
These little nasty creatures come down chimneys or through small cracks and gaps. You will never prevent them from getting to the old banana or rotten apple. If you don’t have the means to dispose of rotten food right away, just put them into a plastic bag and tie it up as hard as you can.