Pro: cobalt-60 is really effective at getting rid of those pesky slugs and aphids.
Con: organ liquification and agonizing death.
A toss up really.
> "If you take, say, fifty H-bombs in the hundred megaton range and jacket them with Cobalt-Thorium G, when they are exploded they will produce a doomsday shroud. A lethal cloud of radioactivity which will encircle the earth for ninety-three years!" —AdS