I saw an ad yesterday... Linen's and Things (of all places). It was like $20-30. Doubt if it works.

I found out my parents bought a pro grade one from samclub.com to catch me when I walk in early in the morning. Found it tho and hid it before it was ever used.

Plus drinking and driving is a stupid choice. U run into me drunk, I'm kicking your ass before the cops get there.