Pets & Pest
Indoors, pests, house dust mites, cockroaches, and – in inner cities in particular – mice are important sources of allergens. These allergens can lead to diseases of the airways, rhinitis, and asthma. Exposure varies depending on the type of environment and cultural habits. How much contact with pets affects the development of asthma in people remains unclear. However, allergic people should avoid exposure to substances to which they are allergic
(GreenFacts- Facts on Health and the Environment)
Pet dander impacts to air quality because of how small it is. As the dander is extremely light, it can stay in the air for an extremely long amount of time. In fact, pet dander is more likely to stick around in the air longer than dust mites! Beyond that, the flakes of skin from your pet are jagged around the edges, making them perfect for getting stuck on fabric all over your house. These two characteristics allow it to have spread easily, having the biggest impact possible on your health.
Unlike humans, pets tend to shed much more. Pet hair and dander can get into all sorts of places too, such as air ducts.
Your home’s air conditioning and heating filters need to be replaced more often. Pet hair and dander are easily blown around the home and sucked into the return air vent. The filter blocks most of this but does become dirtier faster.