Heat puts Belgian kitchens at greater risk of spoiled food and insect infestations

La DH warned households across Belgium on Friday, 14 August 2026, that the summer heat was accelerating food spoilage and encouraging fruit flies and fly larvae in kitchens and rubbish bins. The consumer report set out preventive steps rather than documenting a new contamination outbreak; no nationwide food-safety incident was reported.

Updated: 17 August 2026, 14:00 CEST.

The immediate concern is temperature control. Belgium’s Federal Public Service for Public Health says microorganisms multiply rapidly in food kept at room temperature. Its food-safety guidance instructs consumers not to leave prepared dishes outside refrigeration for more than two hours and to refrigerate cooked and perishable products promptly, at no more than 7°C. The same authority recommends keeping frozen food at −18°C and never refreezing food that has partially or fully thawed.

That makes ordinary shopping habits more important during hot spells. The federal guidance says consumers should preserve the cold chain, follow storage instructions on packaging and keep raw meat, poultry and fish separate from cooked food. It also advises storing food in closed containers, washing hands and work surfaces, and cooking vulnerable products thoroughly; an internal temperature of 70°C is its benchmark for safe cooking.

Waste creates a second problem. La DH highlighted how exposed or decaying food attracts small flies and how fly larvae can develop in warm, damp bins. The practical response is straightforward: remove spoiled produce, close food containers, wipe up juices and crumbs, seal waste bags and clean bins regularly. Keeping fruit only in quantities that can be eaten before it overripens also reduces both waste and insect attraction.

The distinction between quality and safety matters. An unpleasant smell, mould or unusual texture is a clear reason to discard food, but the Federal Public Service notes that harmful microorganisms are not always visible. Consumers should therefore respect use-by dates and required storage temperatures rather than relying solely on appearance.

People who are pregnant, very young, elderly or immunocompromised require particular care. The Federal Public Service identifies these groups as more vulnerable to serious foodborne infections, including listeriosis.

The broader pattern is becoming familiar. The Royal Meteorological Institute defines a Belgian climatological heatwave as at least five consecutive days above 25°C, including three at 30°C or more. As periods of intense heat recur, checking the refrigerator, limiting time between shop and home, and dealing promptly with organic waste become routine summer precautions rather than exceptional measures.