Allergens are lurking all over the place.
Dust mites are a common allergen. They are a close relative of spiders. They can only be seen with a microscope. Dust mites are found inside of warm areas like bedding and carpet. In order to control allergens, dust mites have to be eradicated. Allergy symptoms that come from dust mites can include itchy, red, or watery eyes, a runny nose, and facial pressure and pain. Dust mites can be controlled using an air purifier. A room air purifier can work very well and it is not very expensive. A room air purifier can remove 99% of allergens and dust mites in the air. An air purifier can also remove mold, mildew, vocs, and harmful bacteria and viruses. I bought a room air purifier a couple of months ago. When I bought the room air purifier, I also cleaned all of the air vents in the house. I read that the air vents have a lot of dust and bacteria. They were actually very easy to clean. I removed each one of them with a screwdriver and then I placed them in a warm soapy bathtub of water. The dust and grease filled the bottom of my tub. I had to scrub the vents with a toothbrush to remove the last of the grime. The air vents were dirtier than I thought they were. There was a lot of gross stuff on the inside of the vent covers. After they were all cleaned and the air purifier was running, the house smelled much more fresh and clean.