A member asked:

Old urine stains under toilet seat turn pink when i cleaned them. blood or just normal chemical rxn and my kids need to clean it more often?

A doctor has provided 1 answer

Not blood: This is a chemical reaction with the cleaner that you use. However, when you clean the toilet, they should disappear unless the seat is permanently stained. Try using a different cleaning agent.

Answered 1/16/2015

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