How Long Can Roaches Live Without Food & Water?. Yes, a cockroach can survive without its head for up to a week. This is because cockroaches do not need their head to breathe; they have an open circulatory system, which means they breathe through their body. However, they do need water to survive, and without a head, they can’t drink water, so they usually end up dying because of dehydration.
How Long Can Roaches Live Without Food & Water? from cdn.orkin.com
WebCockroaches can survive for several weeks without water, but they can only survive.
