 SCP-647, when observed via video feed, is a cardboard box approximately sized for a 35 centimeter CRT type television. When a live human being, hereafter, is subject within 1.5 meters of the object, SCP-647 will change its dimensions such that the subject can fit inside it easily. If multiple subjects are within 1.5 meters, the dimensions will adjust to be most appealing to the subject with the most disheveled appearance. When a subject enters SCP-647, the flaps of the box will close and are unable to be opened, and testing the flap resistance of the force in excess of 30kN. Once the flaps are closed, the object will secrete a digested fluid. This fluid, unlike mammalian stomach acids, is a decaying agent that slowly weakens its victims from the inside out. From there, the body is dissolved and the bones are expelled from ███████. After everything has been digested and the nutrients absorbed, SCP-647 leaves behind its waste as a puddle of water mixed with a fluid similar to motor oil. This process takes approximately 10 minutes. As the time sends to last feeding increases, the transformation becomes more elaborate, including a blanket and lining of newspaper after 2 days, cans of food after 3 days, and bottles of alcoholic beverages after 5 days. As natural habitat is an urban environment, SCP-647 chooses one spot, usually in the corner of an alleyway, out of direct view of main streets. After feeding 2 or 3 times, SCP-647 will relocate, usually during the night. Locomotion is achieved by means of movement of the flaps. SCP-647 has been known to actively attack a subject rather than waiting for them to enter on their own. Attempts have been triggered by attempts to damage SCP-647, including sample retrievals, attempts to remove extra components manifested by SCP-647, time periods of more than 7 days between feedings. In addition, after 8 days, SCP-647 will attempt to relocate. If blocked, it will spray acostic liquid similar to that of digestive juices onto all nearby objects, including walls, causing them to dissolve over 15 to 20 minutes depending on composition and mass. SCP-647 is self-repairing, fibrous tendrils will grow across any tears taking on the appearance of duct tape after approximately one hour, and appearing as cardboard matching the rest of the surface after 24 hours. When set on fire, SCP-647 will out-out loud, human-like shriek and attack any subject in range, while the surface will ██████ circumstances of retrieval. A sharp decline in the number of indigent persons with no correlating increases of admissions to homeless shelters and ████ was noted by routine data mining. Agents were dispatched to investigate. After a 10-day search, agents located the source of the decline, SCP-647, as it was feeding on a drainage culvert. Document 647 FBL excerpts. One dead human body, time of death plus 12 hours placed within SCP-647, corpse consumed without incident. 60 dead lab rats, total mass of 50 kg, time of death plus 12 to 24 hours placed within SCP-647, corpses consumed without incident. 55 kg of ground beef placed within SCP-647. SCP-647 attacked subjects within room with caustic fluids. No. Similar chests with multiples of a single body part. These rats and headless cadavers produce similar aggressive behavior. It appears that SCP-647 needs to process a complete organism, but does not object to a corpse less than two days old.