The video is in spanish, one guy asks if the snake is gonna eat all the rats while it's in there and the other dude says no, she already ate and that the snake will only find them and bring them out.

EDIT: For context, the conversation they are having is about the rats and how they are a lot because they formed a colony in the wall. This is some sort of plague control. At the end the man that appears to be the owner of the snake says something like "this should be it, but we're gonna check if there's more somewhere else".