Household bleach (5.25% or 6.00%-6.15% sodium hypochlorite depending on manufacturer) usually diluted in water at 1:10 or 1:100. Approximate dilutions are 1.5 cups of bleach in a gallon of water for a 1:10 dilution (~6,000 ppm) and 0.25 cup of bleach in a gallon of water for a 1:100 dilution (~600 ppm). Sodium hypochlorite products that make pesticidal claims, such as sanitization or disinfection, must be registered by EPA and be labeled with an EPA Registration Number. Open bottle of concentrated bleach good for 30 days. Diluted use-dilutions should be made fresh daily (24hrs). Active molecules bind to cellulose (such as rags or wipes made with cotton or paper components), significantly reducing efficacy.