That's another negative we've learned after using these for a few years now. There's a vent inside the chiller on top positioned on the "floor" that makes it super easy to knock crumbs into. These fall down into the drain and clog the lines on occasion. Our service tech is now a pro at blowing the lines out with CO2 to stop the water from flooding the cabinet. Other than ripping flesh with jagged edges and occasionally clogging up, the 6 we own have been reliable at doing their job of cooling.