Police searched the area near the store located at 5729 Rockmart Highway after the robbery, which occurred around 2 p.m.
A man described as a white male, thin, between 5 feet 8 inches tall and 5 feet 10 inches tall entered the store on foot.
He pushed past a customer and her son and leaned across the counter with a concealed object, according to Floyd County Police Sgt. Teri Davis.
The suspect asked for money and received an unspecified amount before running out of the store, taking a right and heading toward Craton Road behind the store.
Police called in a tracking dog in hopes of finding the suspect.
Pfc. Richard Penson tracked the direction with a K-9 unit and reported that the subject appeared to have left in a car once he reached the road.
No one was injured in the incident and it is currently under investigation.
Police are reviewing the footage of multiple security cameras that were recording the incident at the time.
The subject was wearing a hoodie and had most of his face concealed.