Usually, people associate formaldehyde as a chemical used to preserve biological specimens, not a chemical found in everyday products. Many companies use formaldehyde to preserve wood products and resins. According to OSHA (Occupational Safety and Health Administration), the PEL or permissible exposure limit is 750 ppb (parts per billion) over an 8 hour period at the work place. The threshold for most people is 800 ppb, before experiencing acute symptoms from formaldehyde exposure. The most common symptom from formaldehyde exposure is irritation of the throat, nose, and skin. Prolonged exposure to high levels of formaldehyde can exacerbate asthma and other respiratory illnesses. Unfortunately, there are no set limits of exposure for homes by the federal government, (i.e. Center for Disease Control or the CDC). Using SWFT Air Deodorizer is the best way to help remove toxic formaldehyde from your home and keep your family members and pets safe.