Surveillance video caught one of the suspects who have targeted businesses overnight, smashed their windows and taken cash and anything else of value.
A burglary at the Classy Café cost the eatery owners more than the $9 in quarters from their cash register. It also cost them $200 to repair a smashed backdoor.
"It's just frightening that somebody would just break in like that for no apparent reason other than looking for money," said Wendy Rey of Classy Café.
The same night, six other businesses in the same shopping strip were also hit. There have been more than 30 burglaries in the last three months throughout Rancho Cucamonga.
Investigators suspect that there are several more suspects than the one caught on surveillance camera.
"They believe that there are maybe two or three different groups of suspects that are committing these burglaries," said Cindy Bachman of the San Bernardino County Sheriff's Department.
In many of the burglaries the suspects used rocks in order to smash their way inside.
Pest control owner Chuck MacDonald recently installed steel bars across access doors to his business after two attempted burglaries. He said the chemicals at his business, Quality Commercial Pest Control, could be dangerous in the wrong hands.
"The thing that scared me the most was the fact that having the liability of somebody getting a hold of that," MacDonald said.
The rash of burglaries has some business owners on alert and adding a few extra layers of security.
"You are sort of locking yourself in and trying to be more careful about strangers that you are not used to seeing walking around. It makes you more leery," said Becky Carr of Classy Café.
Anyone with information is asked to call San Bernardino County Sheriff's Rancho Cucamonga station at (909) 477-2891.