Insects are part of the big ecological picture, but in your small part of it they are annoying. They enter where they are unwanted, making noise and carrying diseases. Flies are especially bothersome, but they can be eliminated by natural means.
Fly paper is one solution. On the other hand, certain plants repel flies while providing attractive smells. Basil is just one example. Citrus rind smells good to humans, while flies dislike it. Crushed cloves or pine needles are also natural repellents. Make sachets containing one of these ingredients and place them wherever flies give you trouble. Other natural means of fly control include citronella products like torches and candles.
By keeping clean, you will also reduce the motivation for flies to enter your home. Seal food or cover it against exposure to fly droppings. Remove all pet feces from your yard. Put the lid on your garbage can. Add screens to patio doors and windows so you enjoy fresh air without bugs.
If it is too expensive to install screens, hang curtains with beaded fringes. This will add a colorful retro style to your patio door, provide air flow, but prevent flies from entering your home. These are sold in plenty enough styles and colors to match the color of your kitchen. More importantly, these ideas will reduce your exposure to fly-borne germs.
