Acarids, also known as dust mites, are minuscule arachnids that thrive in household dust. These tiny creatures are common allergens that can cause asthma and other respiratory problems. Acarids are often found in bedding, carpets, and upholstered furniture. There are many different synonyms for the word acarids, such as dust mites, house mites, grain mites, storage mites, and flour mites. All these terms refer to the same type of tiny arachnid that can cause allergic reactions in humans. Knowing these synonyms is essential for anyone who wants to keep their home clean and free of acarids. Regular cleaning and airing out of the home can help reduce the risk of allergies and asthma attacks.