Asda said it has reported the footage to police
Police are to investigate an allegation that a former supermarket worker was caught on camera licking a raw chicken before putting it back on the shelf.
The staff member at Fulwood in Preston, Lancashire, is also alleged to have urinated in a bin and played cricket and football with items on sale.
The antics were filmed by a co-worker on night shifts at the store. The man has since left the company.
A spokesman for Asda said it was "disgusted and appalled".
Lancashire police are also looking at camera footage.
The worker is videoed letting off a fire extinguisher and then is shown on as the fire service respond to a hoax call at the supermarket.
Asda shocked by worker's actions
The worker is also shown sticking his finger in one of the chickens on sale and throwing eggs at a wall in a back room.
A spokesman for Asda said: "We are absolutely disgusted and appalled by the behaviour of this man.
"Despite not working for us since April 2007, we now have video evidence of criminal damage and we have taken this matter up with the police."
It is understood the man seen allegedly damaging stock worked at the supermarket between 2005 and 2007, but the footage has only just come to light.
The former shop worker is alleged to have returned to the store in 2009 after leaving Asda's employment.
He stamps on chickens on display before tearing off the wrapping, licking a chicken and replacing it on the shelf.
Insp Jameel Murtza, of Lancashire Police, said: "We are currently in the process of reviewing CCTV footage of the incident.
"We are liaising with the management at Asda with the aim of identifying any criminal offences that have taken place."