It comes as officers across the area take part in Anti-social Awareness Week.
Shoppers at a supermarket in Blackpool have been targeted by youths throwing water bombs.
Police were called to the Asda store on Cherry Tree Road earlier this afternoon (July 19).
It followed complaints to Lancashire Constabulary by customers and staff.
PCSO’s Anna Morris and Imran Ahmed attended the Asda store in a liveried police car to deal with the anti-social behaviour.
They posted a picture and details of the incident on social media.
The post read: “PCSO’s Morris & Ahmed are out on patrol around Blackpool South in the ASB car until 10pm.
“Just dealt with our first job at Asda on Cherry Tree Road where youths have been throwing water bombs at customers.
The number and ages of the youths has not been disclosed. No injuries were reported.
It comes as officers across the country take part in Anti-social Awareness Week.