Ive thought about a backyard rink a few times. That's funny.
I'm neurotic and just pulled the plugs. I took a pic and will post tomorrow at work. But right plug is oily at the threads. Can't say I'm pleased with the way they were seated in there.
Squirrel condoms is a great call. I'll get some new provalactics tomorrow for the weekend, and get them on.

Probably a safe thing to do even if they are good.