Which preventive measure is effective for maintaining good indoor air quality?

Regular cleaning and controlling humidity are vital for maintaining good indoor air quality because they directly address the factors that contribute to pollutants and allergens in indoor environments. Regular cleaning helps to eliminate dust, dirt, pet dander, mold spores, and other contaminants that can accumulate over time, while it is also key to preventing the introduction of harmful substances into the air.

Controlling humidity is equally important since high humidity levels can promote the growth of mold, mildew, and dust mites, all of which adversely affect air quality and can lead to health issues. Keeping indoor humidity within the recommended range (typically between 30-50%) helps prevent these problems and contributes to a healthier living environment.

By focusing on these preventive practices, indoor spaces can benefit from improved air quality, leading to better health outcomes for the occupants. Choices such as using more air fresheners or limiting ventilation do not effectively address the underlying causes of poor indoor air quality and may even exacerbate the issue by introducing additional chemicals or reducing the fresh air exchange necessary for a healthy indoor environment.