or... if your not into clubbing them.. 1 part detol to around 6 parts water.. use a sprayer bottle and spray on their backs! they die in about 2 minutes... you get a whole lot more this way!
Or the other thing is if you have kids in high school.. you will know all about this one... the kids normally have to go out and catch a few toads, then chuck them in a freezer (preferably in a container before they put them in the freezer), take to school the next day and disect!
lotsa fun!
rowena