HI. Buy a box, and put some peanut butter on a small piece of paper within the box. Put a small Dixie cup size bowl of water next to it. Peanut butter makes everything thirsty!! Set the box up 1/2 way with a stick and it will drop over the hedgehog while it's eating the peanut butter. It's harmless to the animal and you. You do know what my next question is going to be right? Why, dear, why in the world would you like to catch a hedgehog?