McKay says it's been a problem for two years and he knows it's human poop being left on the bike path.
"Well animals don't carry toilet paper and then stuff it on the top," said McKay.
McKay says the person leaves toilet paper on top of the poop every single time. It's a mystery to many as to why someone would do it, especially when there are public restrooms nearby.
"It's gross and other people shouldn't have to use our path like that," said McKay.
McKay hopes the new signs will get their message across.