I personally prefer the guillotine door as it generally has a bigger opening and it is positively closed with an active latch to prevent pigs from rooting.
Guillotine trap door trigger.
Rooter lifting gates require that a hog use its nose.
A dropwire secures the tire to the main wire.
Guillotine or sliding drop gates use a trip wire to trigger the door to fall.
This is not a continuous trapping door once it s closed it s closed until you come and manually open it or reset it.
The guillotine door raises up to create an opening into your trap and falls straight down when it s activated.
Guillotine or drop style doors are called single catch doors because once the trap has sprung that is the door has closed no more animals can enter the trap until it is manually reset.
Right outside of gate door.
Therefore it is extremely important that the trap be strategically baited to insure that most if not all of the pigs in a sounder have entered the trap.
Lower left 4 triggers front side l shows eyebolt and back side r shows hinge.
Note handle at bottom to raise the gate.
Photo courtesy of texas agrilife extension.