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It sounds like you may be pouring undiluted bleach directly onto a surface, which we actually recommend against. Bleach should always be diluted with water first before use—it should never be applied full strength to anything! The residue you see is salt. That’s because the sodium hypochlorite active in Concentrated Clorox® Regular-Bleach naturally breaks down in salt and water, a big part of what makes the product so environmentally friendly. Following label instructions is important to make sure the product is used safely and performs as promised. Here are some instructions on how to properly dilute bleach for common disinfecting uses:
Read more at https://www.clorox.com/dr-laundry/making-sure-you-dilute-bleach/#fsKjOx8DpDfAjWTW.99