A Turkish medical expert warned Monday people that there are nearly 10 million mites in a bed which has been used for five years.

“One gram of house dust contains about 19,000 mites, including 500 alive. Mites are allergens that are common in houses, and can cause allergic diseases,” Ahmet Akcay, a pediatric allergy and chest diseases specialist told Anadolu Agency.

House dust mites are too tiny and almost invisible.

“Mites are mostly found in the beds, pillows, bedding sheet, blankets, carpets, fabric-covered furniture, plush toys and curtains,” Akcay said.

Since our beds are favorable for mites and bacteria,

Read more: Dusts home for allergenic mites in bedrooms: Expert