Employees should wash their hands often, should handle food only when necessary, should taste food only with clean utensils, should never in preparation areas.

The answer is spit or smoke in preparation areas.

It is very unhygienic to spit in preparation areas as it spreads bacteria and can contaminate food. Smoking is also unhygienic as it spreads ash, tar, nicotine and chemicals that are detrimental to the health of others.

avoiding recreational drugs instead of using them

answer; indirect elisa;