Hanging in my bathroom I have three leather strops, one linen strop and one nylon strop converted from the strap off an old gym bag. Of all these I only use the nylon and one of the leather strops. During tonight's shave I looked at two of the strops I don't use and found that they were furry with mold.

The only way I know of to kill mold is with vinega. Is vinegar harmful to leather? Is there any way to save these strops that never get used or should I just stop being a hoarder and throw the old, nicked, rough strops in the bin?

Cheers,
Nathan