Indoor Air Quality (IAQ) - USA Studies

Studies Show HOST Cleaning Improves Indoor Air Quality.

Carpet has an important role of filtering the air. It traps and holds soil, dust and allergens. The vertical pile of carpet traps and holds many times its weight in small particles, including dust and allergens, that enter into the indoor environment and descend onto it from above. Substantial research suggests carpet does not release these elements back into the air. However, filters need cleaning and so it's important to routinely clean carpets.

The HOST System of applying HOST Dry Carpet Cleaner to the carpet, brushing it through the carpet and then vacuuming up the HOST Dry Carpet Cleaner removes dirt and reduces allergens. Research studies have shown that one cleaning with the HOST System using HOST Machines reduces: Dust mites by 78%, Dust Mite Allergen by 75%, Cat Allergen by 85%, Mould Spores by 85%.

Because we make claims that the Host system removes Mite and Allegens our manufacturing facility has to be certified by the USA Government Environmental Protection Agency (EPA) and our Establishment Number is 074202-WI-001.

So, just One HOST Cleaning Reduces Dust Mites by 78% and Dust Mite Allergen by 75%

A study of 25 homes, conducted in Wisconsin USA, to determine the effect of HOST Dry Extraction Carpet Cleaning on dust mites showed a 78% drop in the average mite count. An extended study of 63 homes in Georgia and Wisconsin showed mite allergen decreased by 75% one day after HOST Dry Extraction Carpet Cleaning. This research has been peer reviewed and was one of only 500 papers worldwide accepted for presentation at the Sixth International Conference on Indoor Air Quality and the Environment in Helsinki, Finland.

University laboratory tests prove HOST is not a food for dust mites. They eat only protein—skin scales—HOST is not a protein.

HOST Cleaning Dramatically Reduces Cat Allergen in Carpet

Pet allergens are one of the top indoor allergens to which people are sensitive. In 1995 and 1996 several homes, with a cat in residence for at least one year, were studied for the presence of cat allergens and the effects of HOST Dry Extraction Carpet Cleaning in reducing them.

The study established that cat allergens (dander, hair and saliva) in carpet can be decreased 85% with a single HOST Dry Extraction Cleaning of carpet; a second cleaning reduces the number of these allergens to even lower levels.

This study was presented at the Seventh International IAQ Conference in Nagoya, Japan, July 1996.

Mould & Mould Spores Also Dramatically Reduced with One HOST Cleaning

Mould spores travel with wind current and are deposited on all indoor and outdoor surfaces. Mould allergens are found virtually everywhere in residential and commercial environments.

IAQ research showing HOST removes mold spores was confirmed by studies conducted in Wisconsin and Georgia. Mould spore levels in the Georgia test homes (humid climate) decreased by 85%. Levels in the Wisconsin homes (temperate climate) decreased by 94%.

This study was presented at the Seventh International IAQ Conference in Nagoya, Japan, July 1996.

Our own in house tests, not peer reviewed, show enhanced results with newer generation Host systems.

Reduction of Dust Mite Allergen in Carpets With One HOST Cleaning


Drop in Cat Allergen in Carpet Dust With One HOST Cleaning


Decrease in Mould Spores in Carpet Dust With One HOST Cleaning



1. Fix roof and pipe leaks promptly

2. Keep HVAC equipment dry and operational. Disinfect drip pans often, change filters regularly

3. Insulate to prevent condensation.

4. Increase ventilation/fresh air into building

5. Reduce humidity and keep indoor surfaces dry

6. Switch to low odor VOC paints, adhesives and cleaning products

7. Control dust; switch to treated dusting cloths

8. Remove dust buildup inside HVAC ductwork. Filter the air to trap dust and other airborne particulate

9. Use a high retention vacuum cleaner that retains particles larger than 0.1 micron. Respirable dust may be redistributed if a dirty or faulty bag is used.

10. Use the HOST Dry Extraction Carpet Cleaning System for carpet care and maintenance.