[Porsche-O-Phile]

In the last three weeks I've extracted the floating corpses of four chipmunks, six mice and a squirrel. Are these little guys just clumsy or what? I'm figuring they (somehow) fall in and can't get from the water level to the pool edge - a height of a few inches. Not much for a human, but if you're three inches tall it's probably insurmountable... I wonder if they just wear themselves out trying to jump out of the water unsuccessfully until they eventually tire out. I'm wondering if I should throw one of those styrofoam skim-boards in there so they'd at least have something resembling "terra firma" to climb up onto. Anyone else having this problem?