Wow! I didn't realize that trees falling, big dogs, little dogs running through them, a half a dozen little kids running and screaming through them, gun shots, multiple gun shots, the neighbors lawn mower back firing, people wearing bright colored clothes walking through them, etc, etc, would cause them to go ballistic flying around in the pens like zombies. I have never (not one) wire pen door come open with these latches, and I'm willing to bet that I've been bending wires on pens long enough to have tested and proven a latch or two. Every pen I own with a wire door has these latches. I will continue using my simple latch system.