I have a Toto Drake toilet, and I've noticed a green or dark blue/black area at the bottom interior. It's not mold and won't come off. I contacted Toto's customer service, who suggested it might be hard water/mineral deposits. The rep recommended CLR (calcium, lime, rust remover), letting it sit for 15 minutes, then scrubbing with a nonscratch pad. I used a whole bottle, but it didn't help.
Does anyone know what this is? The toilet has CEFIONTECT, but to my knowledge, no abrasive has ever been used on it--and I'm not sure it would cause this problem even if it had been.
Thanks.
Does anyone know what this is? The toilet has CEFIONTECT, but to my knowledge, no abrasive has ever been used on it--and I'm not sure it would cause this problem even if it had been.
Thanks.