One of the best ways to trap a groundhog is to use a live trap that catches the rodent in a cage. These traps often have a single door and do not harm the animal. Another way to trap a groundhog is to use a spring-loaded trap that wraps around its body.
Spring-loaded traps kill the groundhog, which means the property owner must also dispose of the carcass. Another downside of using this kind of trap is that cats and small dogs can get into them as well. Some of the best baits to lure groundhogs into traps include sweet corn, string beans, peaches, strawberries and lettuce.