Your local health dept determines how often you clean equipment. Slicer probably end of day if it's in constant use. Thermapen or any other temp probe that goes in food is every use with an alcohol wipe.
NSF means it's approved for food prep and serving and not how it's used.
Owner/Head Cook/Chief Bottle Washer for Great Lakes BBQ & Feed Competition BBQ Team
FBA Member, KCBS Member & KCBS Certified BBQ Judge
Spicewine medium, weber kettle, gas grill