Sodium hypochlorite is what most know as bleach ... To stop black spots from returning, apply this solution annually. This will kill any spores before they have the chance to germinate and will ...

Is your roof looking dirty or covered in moss? Those black streaks might be algae, and green clumps often mean a moss issue.

A toilet should be cleaned and disinfected at least weekly. The active ingredient in chlorine bleach, sodium hypochlorite, ...