Police officers found a haul of gas canisters in a gutter in Poulton town centre, close to bars.
The capsules had contained nitrous oxide, also known as laughing gas, which is not illegal but is a popular recreational drug.
Officers are now asking anyone who finds more of them to hand them in to be disposed of safely, as well as warning people of the dangers of inhaling nitrous oxide.
PCSO Michelle Mackay said: “Laughing gas is becoming an increasingly popular recreational drug.
“While it is not illegal to possess nitrous oxide, with side effects ranging from dizziness to death it is indeed a worrying trend.”