Characteristics and structure
The dust mite belongs to the family of mites (Acaridae). Adult mites are 0.5 to 0.7 mm long. They have four pairs of multi-segmented legs with claws at the end. Larvae are similar to adults but have only three pairs of legs.
Life cycle
The flour beetle goes through several stages of development. In difficult environmental conditions, it can take on a resistant form, called a spore, waiting for better conditions to develop. Interestingly, the flour moth is able to eat seven times its own weight in a day. Its diet consists mainly of cereal products, which it contaminates with faeces, moulting skins and dead individuals.
Harm to food products
The flour moth is a pest of many food products such as dried goods or flour. It eats them, moistens them and contaminates them with faeces and excrement, leading to mould. Products infested with this mite acquire an unpleasant musty odour and are unfit for consumption. It is worth noting that the flour mite does not feed on products with a moisture content below 12%.
Impact on Human Health
Mealworms can cause various ailments in humans. Their hairs can cause itching and skin irritation, also known as ‘warehouse worker’s dermatitis’. They can also irritate the respiratory tract and cause allergic conjunctivitis. Consumption of products contaminated by mealworms can lead to gastrointestinal disorders.
How to get rid of flour weevils?
Products heavily infested with flour weevils should be disposed of immediately. They are not suitable for consumption or animal feed. Furthermore, they should not be processed, as toxic substances can pass into the products.
Summary
The flour beetle is a small but very harmful pest that can attack food products in our homes. Its presence can lead to serious health problems, so it is important to check food products regularly and take action to control it.
Frequently asked questions
What is a flour mite (Acarus siro) and how can you recognize it?
The flour mite (Acarus siro) is a very small but harmful kitchen pest from the Acaridae family. Adults are about 0.5–0.7 mm long, with four pairs of clawed legs; larvae look similar but have three pairs of legs.
What foods are most commonly infested by flour mites?
Flour mites most often infest cereal products and dry goods, including flour. They feed on these products and contaminate them with faeces, moulting skins, and dead individuals.
Are flour mites dangerous to humans and what symptoms can they cause?
Yes, they can cause health problems such as itching and skin irritation (“warehouse worker’s dermatitis”). They may also irritate the respiratory tract, cause allergic conjunctivitis, and trigger gastrointestinal disorders after eating contaminated products.
Can you eat flour or dry goods contaminated with flour mites?
No—infested products develop a musty smell, can lead to mould, and are unfit for consumption. Heavily infested food should be thrown away and not used for people or animals.
How do you get rid of flour mites in the kitchen and pantry?
Dispose of products that are heavily infested immediately. Do not process them, because toxic substances can pass into other products.
How can you prevent flour mite infestations in stored food?
Regularly check stored food products and react quickly if you notice signs of infestation. The article also notes that flour mites do not feed on products with moisture content below 12%.
