Cleaning Crews Language Barrier Causing Confusion at the Office

This sign was literally put up 2 minutes after our cleaning crew steam cleaned the rug (And yes the fact that I was there while they were steam cleaning gives you a great idea of how shitty my hours are).  

Is this a cultural difference thing? High rate of Federali's filing personal injury lawsuits down in Mexico after slipping on wet rugs?  That's the only possible explanation right?

 I get that you have to expect some level of a language barrier when you're dealing with your offices cleaning crew, that's a given.  But I don't think it's too much to ask that they understand the difference between a wet tile or linoleum floor and a wet carpet. 

Say what you want about the creepy middle aged white guys I remember being janitors during my time in public schools, they leered at the girls too much, drove suspicious vans, had creepy mustaches, etc...At least they understood the function of the wet floor sign, and really, that's all you need to be qualified.