🚫🪰A tip that many people would have known sooner

large rooms;
    Remove food sources that attract other insects.

Other ingredients, they also work

From That Depending on what you have at home, you can replace the mixture with:

    juiced juice;
    a little beer;
    the residual red wine;
    a few pieces of very ripe fruit;
    Heated honey.

These smells also attract flies.
Errors to avoid

Even a good trap will be less effective if certain habits persist.

Avoid:

    air exposure to very ripe fruit;