Re: Gi has faint mold spots, please advise
Sunlight is particularly effective at killing mold and mildew (including the spores). The UV and heat kills the mold and mildew. I let my gis bask in the sunlight on a regular basis.And I always hang the gi up after practice to make sure it dries out.
Of course UV, heat, bleach, peroxides and just ordinary cleaning damage fabrics over time. Some fabrics/weaves are more resilient than others, but they all wear out eventually.