WOW what a shame
One thing you can try geeze how big are they?? Maybe get a crab or racoon trap or two with freshly killed rats or bunnies. But It might scrach them up check before hand. Perhaps get a large tupperware box or two and try the same thing only cutting a hole that is big enough for one or two to get in, but after it eats the freshly killed it will be to big to get out. Sorry I am not anymore help if they were the size of corn snakes lol you can get a 2 litter bottles and put a freshly killed mouse or rat in it and the same thing applies, it can crawl in the bottle but it wont beable to get out once it has eaten. GL and keep us informed!