For purposes of this discussion, then, any constricting snake that reaches an adult size of eight feet or more should be considered potentially dangerous. The fact is, however, that they are large and powerful animals that grow quickly, reaching a potentially-dangerous size of eight to ten feet and a weight of fifty pounds within two years. Despite what you may hear, Burms are not suitable for beginners, and should not be kept until you have a few years of snake keeping experience to your credit. The first priority in keeping large constrictors is to make sure they are under strict control at all times. The enclosure for a boa or python must be spacious and extraordinarily strong.
Large snakes are immensely powerful and can push their way out of all but the strongest cages.
The cage should be locked at all times, and if possible should itself be within an escape-proof room that is also locked. Very large snakes can be kept in a room of their own, or a walk-in closet which has been converted into a snake cage. These must be kept securely locked at all times. Be aware that boas and pythons can push their way through windows or screens and escape. Under absolutely no circumstances, however, should a large constrictor ever be allowed to free roam in a room that is occupied by humans.