Method and system for determining the location of a fecal insult

A system for determining a location of a fecal insult, comprising:

• a plurality of first gas sensors for detecting the concentration of at least one gas indicative of feces at a first plurality of locations in a defined space;
• at least one further gas sensor for detecting the concentration of at least one further gas component being indicative of feces in said defined space at a second location, wherein said further gas component comprises at least one of an organic compound and hydrogen sulphide;
• and
• a receiver unit for determining whether said concentration of said gas exceeds a predetermined first threshold value,
• wherein said plurality of first gas sensors are configured for detecting said concentration of hydrogen gas at each of said first plurality of locations,
• wherein said receiver unit is configured to determine that a fecal insult has occurred in a location where said detected concentration of hydrogen gas exceeds said first threshold value, provided that the detected concentration of said further gas component also exceeds a predetermined second threshold value, and
• wherein there are fewer of said second sensors than said first sensors in said defined space.