I would test a less visible part of the blinds to make sure the spot remover will not also take out the fabric dye.
How to clean vertical fabric blinds.
Rigid vinyl vanes the most common and soft fabric vanes.
Cleaning fabric vertical blinds.
Support the blinds with your free hand as you work from the top of the slat down.
Get a soft brush and carefully wipe away as much dry mould as you can.
Make sure to clean the area before putting them there.
Fabric vertical blinds have an advantage over to curtains because you can replace faded or damaged slats individually rather than replacing the entire curtain.
Unlike some curtains however most fabric blinds are not machine washable.
While you can have them dry cleaned there are a few cheap and easy ways you can clean your fabric vertical blinds right at home.
Avoid taking them down by spot cleaning the hanging panels or give your fabric blinds a deeper clean with a soapy soak.
Use sideways strokes to clean venetian blinds and top to bottom strokes if you have vertical blinds like we did.
Wipe the blinds with a damp cloth.
Since fabric blinds are delicate and can get easily frayed resist harsh scrubbing.
Use caution when handling the vertical blind vanes the tabs at the top of each vane can break off if they are pulled too far in any direction.
How to clean mould off vertical fabric blinds.
Dunk the sponge into the cleaning solution periodically for steady and effective cleaning.
Cleaning mould of vertical fabric blinds requires a bit more back pain.