PROBLEM TO BE SOLVED: To provide a mold remover composition having improved mold removal effect on mold stains.SOLUTION: A mold remover composition comprises (a) hydrogen peroxide or a compound that generates hydrogen peroxide underwater, as hydrogen peroxide, in the amount of 0.005 mass% or more and 10 mass% or less, (b) a specific bleach activator in the amount of 0.05 mass% or more and 7.5 mass% or less, (c) an alkali agent, and (d) a specific alkyl glycoside.
