My boss won't let me use the washroom at work?

isn't that illegal? how can you deny an employee access to the staff washroom. well she hasn't officially said i couldn't use one of them as there is ( 2 ). the last time i used one a couple weeks ago she went off on me and said i wasn't following guidelines and wouldn't even be allowed to work anywhere if i wasn't following health rules.

but her idea of guidelines was using a specific hand towel , spraying and wiping the toilet seat with a strange vinegar/ cleaning mixture and all i did was go for a quick piss , i didn't even sit down on the toilet seat or like do much of anything at the time

so i haven't really used it since other than to wash hands , i'm only there part time so just using other washrooms at lunch break if possible

My boss won't let me use the washroom at work?
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