Astonish - Mould and mildew is a common problem, it appears in a number of places, the picture here was sent in by a customer who used the Astonish Mould and Mildew
Astonish Mould & Mildew Blaster Cleaner Demonstration Video - YouTube
Woman gets her mouldy blinds looking brand new in just five minutes using £1 cleaning spray | The US Sun