Neutralise Allergens on Contact for Up to Three Months - Medically-proven, tannic acid based spray- Neutralises allergens from dust mites, pets, moulds and pollens- Ideal for treating carpets, the second largest allergy source - Not for use on light coloured or white carpets- Reapply every 90 days Allersearch ADS Carpet Treatment is a highly effective and medically-proven spray to neutralise allergens on contact for up to three months.Allersearch ADS includes tannic acid as its active ingredient, which neutralises dust mite, pet dander, mould and pollen allergens that can build up in your carpet.With Allersearch ADS, you can stop the carpet from being a leading source or allergy symptoms.Allersearch ADS extends the time in between repeat cleaning as this stronger formula means that repeat applications don't need to occur until three months later.Allersearch ADS is safe for people and pets when applied to the carpet.Allersearch ADS is available in a convenient 950ml spray bottle to treat approximately 600 square feet.The 3.8l refill bottle is an economical value for larger areas or for repeat applications.Simply spray a fine mist of ADS to slightly dampen the surface, allow to dry and then vacuum.ADS should not be used on white or light coloured carpets, soft furnishings or drapes as it has a light tone that could potentially stain the carpet.Allersearch ADS Carpet Treatment is also available as a milder formula option containing no tannic acid and can be used on any colour carpet to neutralise allergens.