The Warnbro Bowling Club has shared CCTV of the moment two thieves enter their premises and steal cash.
It's understood the offenders broke in through a fence and roller door before rummaging through the office area around 5am on Tuesday.
They got away with about $300.
The pair were both wearing black hoodies and black bands around one of their lower legs.
The offenders were also armed with a crow bar.
The incident has been reported to police.
Anyone who can identify the duo is asked to contact Crime Stoppers on 1800 333 000.

Pop-up ice skating rink glides back into Mandurah for winter school holidays
Federal opposition leader Angus Taylor sits down with local business owners in Mandurah
Police search for missing man last seen leaving Rockingham Hospital
West Aussies urged to be on high alert after surge in winter house fires
New $3.4 million boardwalk to be constructed at Lake Clifton thrombolites
City of Mandurah rolls out new tactile bin lids, accessibility stickers to support residents with low vision
Driver dies in hospital after Australind crash
Welfare concerns for woman with dementia last seen in Cooloongup
Charges laid over fatal West Coolup crash
