[header] How to control microbial growth [title] Boil small, heat-resistant items for 10 minutes to disinfect them. [step] This is one of the oldest methods used to control microbes. Bring a large pot of water to a hard boil and carefully drop in the items that need to be disinfected. 
Most non-electrical glass, metal, and hard plastics are heat-resistant. [substeps] Heat the water to at least 100 ° c (212 ° f) to kill bacteria, fungi and their spores, and almost all viruses.