Happy Halloween (or not) from government agencies.

While you're carving Jack-o-lanterns, trick-or-treating, or dispensing candy to costumed kids, public safety officials see things to be truly scared of, lurking in the fun. 

California Highway Patrol released a message warning Halloween revelers not to drink and drive, and to appoint designated drivers to get to and from parties. 

“With Halloween falling on a weekend this year, we expect an increase in celebrations,” CHP Commissioner Joe Farrow said in a statement.

Naturally, that means protecting trick-or-treating pedestrians, as well as drivers.  

Federal traffic safety statistics show 43 percent of all traffic fatalities and 26 percent of pedestrian fatalities on Halloween night in 2013 involved a drunken driver. 

San Benito and Monterey counties will be boosting DUI patrols tonight, according to a statement from Salinas PD. 

The Monterey County Health Department also released safety tips for tick-or-treaters: Use cross walks and carry glow sticks or flashlights; utilize reflective tape in your costume; and choose face paint or make-up in lieu of masks, which can obstruct vision. 

They also urge drivers to go slowly, and be extra alert when backing out of driveways across sidewalks. 

The California Department of Pesticide Regulation also got in on the holiday season with a reminder to avoid pesticide scares. They released a Halloween-y graphic—the headstone of a hypothetical pesticide victim with the message, "Don't become a grim statistic."

DPR also compiled a list of pesticide-related, real-life scares. 

"Unfortunately these are not fairy tales, but real examples," according to DPR's announcement. "They include unnecessary sicknesses, hospitalizations and brushes with death."

The list of real-life stories includes a San Diego homeowner who in June leaked a concentrated herbicide onto his hands, requiring surgery and skin grafts to repair the chemical burn he received. (The takeaway: Follow label instructions, and don't transfer pesticides out of their original containers, his mistake.) 

In another story, a man accidentally drank 2 ounces of chlorpyrifos. He'd apparently forgotten that he poured it into a drinking container at work, intending to take it home to treat a tree. (The moral of that story, DPR states: "Don’t store pesticides in food or drink containers, or vice versa.")