Invasive insects enter Polish homes during autumn

As autumn temperatures drop, invasive insect species are increasingly entering homes in Poland seeking warmth for the winter.

The Asian ladybird, also known as the harlequin ladybird, is entering residences in large numbers through small gaps in doors and windows. Unlike native species, these insects can be aggressive when threatened and may bite. They also release a yellow hemolymph with a strong odor that contains allergens capable of causing skin irritation, conjunctivitis, respiratory issues, or swelling.

Additionally, the brown marmorated stink bug is appearing in homes. While these insects do not bite or carry diseases, they emit an intense, unpleasant odor resembling rotting fruit when disturbed. They can also cause stains on fabrics if crushed. Environmentally, they impact coniferous trees by feeding on young cones and needles.

To prevent these infestations, experts recommend preventive measures such as installing mosquito nets on windows and doors, and sealing cracks in building facades and window frames with silicone or foam.