Patent ID: 8580728

Claim:
A method of preventing the development of indole based malodour from faecal and urine based soils, the method comprising: contacting the faecal or urine based soil with a home or personal care product comprising a fragrance composition, the fragrance composition comprising fragrance compounds selected from the group consisting of: aldehydes, α,β-unsaturated aldehydes, alcohols, ketones, and mixtures thereof; wherein said fragrance compounds are effective to restrict the formation of indole to less than 0.01 ppm (wt/wt) and thereby prevent the development of said indole malodour, wherein the amount of indole is measured after 24 hours incubation at room temperature in an airtight sealed vessel of suitable fresh human urine containing 0.28% by weight of each fragrance compound, by comparison with a blank sample of suitable fresh human urine, the suitable fresh human urine having less than 0.01 ppm (wt/wt) indole at the start of the experiment and between 0.25 ppm (wt/wt) and 1.25 ppm (wt/wt) indole after 24 hours storage at room temperature in an airtight sealed vessel.