Use diluted bleach to clen concrete driveway
Use to clean shower curtain in washer
Clean patio furniture
Kill moss on the patio
My invention would be a self saturating brush, similar in look to a paintbrush, for the purpose of applying bleach to specific areas. This could also be used for craft purposes.
A spray on cleaner for your grill. After you finish cooking, spray on the cleaner, close cover, and grill will be clean.