I'd been using Food lion's Home 360 which labels itself at 8.25% with great results. Food Lion also sells My Essentials brand bleach which is much cheaper but doesn't list a chlorine strength. I figured the chlorine content was probably lower but thought I'd give it a try to see if I could save some money. Turns out I need twice a much of the My Essentials to get the same result as Home 360 so I'm switching back to Home 360 - better value. Thought I'd share this in case anyone else was thinking about trying a brand that doesn't list the percentage on the label.