Slicer, Sanitizer Bucket, and Mouse Droppings
During a Wednesday walk-through you find the deli slicer was disassembled and washed with detergent at 9 p.m. Tuesday, rinsed, and left to air-dry. The sanitizer bucket at the sandwich station tests 100 ppm quaternary ammonium with a test strip, and the wiping cloth is draped on the counter. Mouse droppings are visible along the baseboard in the dry-storage aisle behind 50-pound bags of flour, and one bag is chewed. The back receiving door is propped open with a milk crate. A cardboard sheet is on the floor under a pallet of canned goods. The three-compartment sink has standing water in the rinse bay. The store's pest-control operator last visited 19 days ago and the log shows no activity. The deli is scheduled to open in one hour.
1. Evaluate the slicer cleaning and sanitizing. What is missing, and how do you correct it before use?
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Washing with detergent and rinsing is cleaning, not sanitizing. The slicer must be disassembled, washed, rinsed, then sanitized with an approved sanitizer at the proper concentration and contact time, and air-dried. Because the slicer contacts ready-to-eat deli meat, it must be cleaned and sanitized at least every 4 hours during use, and whenever it is used with a different food or after raw animal food. Leaving it to air-dry after detergent alone leaves a food-contact surface that can support pathogen growth. Correct it before the slicer is used: reclean and sanitize, then verify the sanitizer concentration with a test strip. Record the cleaning time and initials on the slicer log. The person in charge should observe the first cleaning after correction to confirm the procedure.
2. Evaluate the sanitizer bucket and wiping cloth. What corrections are needed?
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The quat bucket at 100 ppm is below the typical 200 to 400 ppm range on the label, so it is not an effective sanitizer. Discard it, mix a fresh solution to the label concentration, and test with the correct strip. The wiping cloth should be stored in the sanitizer between uses, not draped on the counter; a cloth left out can spread contamination. Use separate cloths for food-contact and non-food surfaces, and change the solution when it is visibly dirty or the concentration falls. Train the sandwich staff to test the bucket at the start of each shift and every few hours. The test strip must match the sanitizer chemistry; a chlorine strip will not read quaternary ammonium correctly.
3. What do the pest and facility findings require you to do, including with the flour?
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The droppings and chewed flour bag indicate an active rodent infestation, not a one-time sighting. Discard the chewed bag and any flour that may have been contaminated; do not try to salvage it. Clean the aisle, remove the cardboard because it is nesting material, and move the flour and other dry goods 6 inches off the floor and 6 inches away from the wall. Close the propped back door and repair the gap; a milk crate cannot be used as a door stop. Contact the pest-control operator for an unscheduled visit and ask for a service report with trap locations and activity. Do not apply pesticides in the dry-storage area yourself. Re-inspect in 48 hours and record the findings. The three-compartment sink also needs to be drained and cleaned so it can be used properly.