The first hotel they tested was Candlewood Suites in Manhattan, New York.

The first hotel they tested was Candlewood Suites in Manhattan, New York.
YouTube |  Inside Edition

As in the previous demonstration of the fluorescent spray, the investigators sprayed the sheets in a room and came back the next day under a different name.

When they lifted the sheets the next day, they made a horrifying discovery...

When they lifted the sheets the next day, they made a horrifying discovery...
YouTube |  Inside Edition
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Lo and behold, the "I slept here" text was still on the sheets!

Lo and behold, the "I slept here" text was still on the sheets!
YouTube |  Inside Edition

Clearly, the hotel didn't change the sheets for the next guest. What?!

After seeing this, they got a hold of the hotel manager...