Businesses along Main Street opened their doors from 4 to 6 p.m. for passersby to collect candy in a safe, monitored environment.
The event has been held for at least 15 years and continues to attract large crowds.
"Downtown is proud to host it," said Elizabeth Isenberg, government relations director for the city of Farmington. "It's the heart of our community."
The event has grown substantially, but over the past few years large crowds led to long lines.
The city responded by decreasing advertising for the event. Those efforts seem to have kept lines moving while still providing a safe environment for families on Halloween.
"The last couple of years, there were thousands of people out," Isenberg said. "This makes it a little more manageable."
The intersection of Main Street and Behrend Avenue attracted a particularly large number of people. Members of My Father's House church organized a "Carnival of Candy."
The carnival featured skee-ball, a penny toss and other games where children could win candy, and a cake walk where adults won cakes baked by church members.
"We've tried to grow it every year," said Bob Moon, the church's pastor. "We're giving away three cakes every five minutes."
Although fewer people came out to Safe Treats this year, Moon says the event is still a success.
"I think it's a wonderful deal," he said. "Both sides of the sidewalk are completely full."
For those handing out candy, last night was also a fun way to celebrate one of the most popular holiday's of the year.
"It's really fun giving candy to the little kids," said Hannah Jones, 17, with UmattR Teens. "More people are coming to downtown. It's more positive ... it's a clean environment."
Wednesday night's event seems to have been a good experience for participating businesses as well; particularly those new in downtown this year.
"It's fun," said SnS Skateshop owner Daniel Diswood. "We ran out of candy pretty quickly, but it's been good advertising for us, too."