Perth restaurateurs are urged to be on guard and report dine-and-dash incidents, after Swan Valley microbrewery Elmar’s in the Valley issued a call for information over an unpaid bill from the weekend.

The post to Facebook on Monday morning was accompanied by CCTV stills showing the couple alleged to have done a runner from the restaurant on Saturday afternoon, leaving an unpaid $250 bill in their wake.

This couple has been accused of feasting at Elmar's in the Valley for $250 before leaving without paying the bill. WAtoday has blurred their faces for legal reasons. Credit:Facebook

“We are sure it just slipped their mind and was an oversight on their part,” the post read, keeping a diplomatic – if not sarcastic – tone.

“We would love for the bill to be paid before the matter is taken to police.”