We have one of these and it's been a problem with dropping the bottom out. Three times, when the carrier had cats in it, the bottom dropped out. Once when going to the vet, it happened outdoors and the cats went running around outside. It could have been dangerous. It then happened gain twice inside the house as we were taking the carrier with the cats upstairs. We thought maybe it was human error in securing the cheap plastic latches. It wasn't.We now have packing tape around the carrier until the new one arrives from Amazon.