Maybe it malfunctioned and they had to service it.
I am just happy to knw they do clean it..i have been to several fast food restaurant and..i can tell you some .. haven't been cleaned .. sence opening..Thank you Hillsboro McDonalds for do us right..even if we have yo wait a little..
Hard to answer
Have no clue on this one.
Clearly, they have an issue of some sort.
That's only up to the company and the owners
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