If you reply to a rental listing and get an email stating that an owner is looking for a “responsible person” to rent his house while he “stays in Africa” (real example), you’re probably going to suspect it’s a scam.

Often, however, rental scams aren’t so easy to identify. The BBB’s new study “Is That Rental Listing Real?” reveals that, no, there’s a good chance it’s not. And you could fall for it.

While most of us picture seedy fake apartment listings on Craigslist, the BBB reveals that rental scams are pervasive even on what are widely considered “classier” house hunting sites like Zillow or Realtor.com. Although, Craigslist is problematic; it only catches around 46% of fake rental ads.