Detergent

The Detergent is an item found in Silent Hill 3. Heather Mason finds the bottle on the sink in Helen's Bakery on the second floor in the Otherworld version of Central Square Shopping Center. Its purpose in the game is to, when combined with the bleach, create a toxic vapor and clear the 2F hallway of moths. The chloramine gas acts as an insecticide and allows Heather safe passage through the hallway. Before mixing the two substances, however, the fan in the preceding hallway must be switched to "off"; after the materials are put into the bucket, then Heather has to turn the fan back on so the fumes will drift to and kill the insects.

The detergent will not appear if the puzzle difficulty is set to Easy, as moths do not block Heather's path so the detergent is unnecessary.