The rabbit's exits have been covered with nets. Ferrets are most adept at tunnel-hunting but are susceptible to larger carnivores above ground. They are knowm to kill game twice their size. They were also used by farmers to rid barns of rodents and mariners to control rodents on ships. What rodents weren't killed by ferrets were frightened from the barn for months due to the ferrets' scent.
Rodents are deathly fearful of the ferret's scent.
Queen Victoria had ferrets in 1875. Ferrets were used in rodent control in the U.S.A. until they were displaced by chemical poisons and traps. Ferrets were even used by Boeing to run wires through tight spaces in aircraft assemblies. Lt. Co. Blaisdell came to the U.S. Space Commands rescue when it was having trouble wiring its new missile warning center. The good Lt. Col. recalled the aircraft exploits of ferrets long ago and volunteered his ferret named Misty.