I need to capture a half-feral cat with a serious medical problem. I have a large wire cage that's not designed to be used as a trap. If I tie string/rope to the open door, pass it through the wire cage and run it along the ground, it would be possible to wait and pull the string once the cat enters.. This won't work unless the door closes and at the same time a knot ties it shut. The knot needn't hold long, 10 seconds against a large strong cat should do the job. Question is, what knot should I use?


NT