Stinkwanzen: Increased insect presence in homes during autumn

A surge in stink bug populations is being reported in Germany and Switzerland as temperatures drop. Following a hot and dry summer in 2026, species such as the Green Stink Bug (Palomena prasina) have experienced high reproduction rates. As autumn approaches, these insects seek warm winter quarters, frequently entering homes through window cracks, door gaps, and roller shutter boxes.

While the insects are not dangerous to humans, pets, or livestock—they do not bite or transmit diseases—they release a strong-smelling defensive secretion if threatened or crushed. Experts advise against using vacuum cleaners or insect sprays, as crushing them can spread the odor throughout a home. Instead, it is recommended to catch them gently using a glass and paper to relocate them outdoors.

To prevent infestations, residents are encouraged to seal cracks in walls and use insect screens on windows and doors. One suggested home remedy to deter them is a spray mixture of vinegar, dish soap, and water applied to window and door frames.