Wait, didn’t you empty your Roomba’s bin just a day ago? You sure did, yet here’s your Roomba, insisting once again that its dust bin needs to be emptied. In some cases, it could be that the recently emptied Roomba bin truly does need to be emptied again. If your Roomba is vacuuming a rug that hasn’t been cleaned recently and is covered in pet hair, for example, a single cleaning could be enough to stuff the bin with debris. Sometimes, however, the Roomba app will insist that the bin is full even though there’s only a few fluffy whisps of dust and hair inside—and even when you clean that gunk …