It's Friday the 13th. It's also a full moon. A perfect time for the top haunted attraction in the country to open its doors. Even spookier, it's in Michigan.

Pontiac's four-story Erebus Haunted Attraction has been voted the best haunted attraction in the United States by USA Today's 10 Best Awards. It is one of the country's largest haunted attractions.

Want to go but afraid you'll pee your pants? Don't worry. You won't be the first.

Erebus has board listing the number of visitors who have peed their pants. They also have a lost and found collection from people that ran out early which has included teeth, shoes, keys, licenses and wigs.

Erebus will be open Sep. 13-14, 20-21, 27-28; Oct. 3-6, 10-13, 16-20, 22-31; and Nov. 1-2. Tickets start at $20.