A spokeswoman for the Colorado Department of Transportation said the talking urinal cakes, which dispense a safety message mid-stream, were actually working in the "Heat Is On" campaign surrounding Labor Day.
Last year, CDOT calculated 1,440 DUI arrests and 13 fatalities during the campaign, which ran from August 17 to September 3.
From August 16 to September 3 this year, there were 1,342 arrests and nine alcohol-related fatalities.
"We would love to see the numbers even lower," said CDOT spokeswoman Emily Wilfong. "Our goal is always zero fatalities. But we are pleased to see the numbers have decreased, and we do feel enforcement paired with a new education campaign contributed to it."
The cakes themselves deliver a message about drinking responsibly and getting home safely.
"Keep a constant stream on this urinal cake and let's see how drunk you are," the tongue-in-cheek-sounding narrator says.
He then rates various states of intoxication -- "Tipsy...charming...hamboned...uh, where are your pants?...winner!" -- accompanied by comic sound effects before delivering concluding words of wisdom: "Make sure you keep winning and get home safe. Drink and don't drive."
Notable deaths of 2014 [PHOTOS]