A more concentrated bleach solution can be used on inserts/prefolds/flats for heavy duty stain removal or serious ammonia. Don’t put PUL covers or nappies with elastics into this mix.
A bucket or smaller vessel can be used to make the solution with liquid laundry bleach (4.2% sodium hypochlorite), a ratio of 1 cup of bleach per 5 litres of cold water.
Soak for 5-10 minutes or until stains are removed, an improvement should be visible within an hour.
Check that the bleach is still within expiry, bleach degrades to salt water over time and becomes ineffective at sanitising.
This method is not recommended for longer than an hour.
This concentrated bleach method can be used on inserts and the dilute bleach mix as per the bleach sanitise option on shells, on the Strip and Sanitise page, followed by a hot hand rinse and a long cycle machine wash.