How often should you replace your kitchen dish sponge to prevent bacteria?

Question

Sponges are notoriously dirty. Is microwaving them to sanitize effective or should you throw them away every two weeks? What do microbiologists say?

BioLab · Answer

Replace your kitchen sponge every two weeks. Microwaving damp sponges kills some surface bacteria but can allow stronger pathogenic strains to multiply inside.

How often should you replace your kitchen dish sponge to prevent bacteria?

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