Why does one put beer in a bowl in the yard?
It's a good way to get rid of snails in the garden. They are attracted by the beer, drop into the bowl, and dissolve. Although you should probably better use Dixie cups, sunk into the ground up to the rim. It's a very effective method.
You know, if I was a snail, that's how I would want to go.
"splendid was their tactic of diving upon our force from the direction of the sun, taking advantage of intermittent clouds"
-Captain Takahisa Amagai, KAGA, June 4th 1942