If You're Not Sure, Don't Touch It!

It's a custodian or janitors worst nightmare.  You do your cleaning, you try to be proactive and help out when something seems amiss, and you cause millions of dollars in damages. Horrifying to say the least.  Check out this article about just such an incident whereby 25 years of research were destroyed by a cleaner that did not read the sign regarding an annoying beeping on the deep freeze freezer.  Millions of dollars down the drain and decades of research gone.  Ouch!

Read it here