This is the skin-crawling moment an insect pest controller discovered the worst case of bed bugs he's seen in his career.

The horrifying footage was filmed in Vancouver on July 12 and captures the moment Ryan Osborne walked into the house he was treating and saw the army of bugs he had to exterminate.

Osbourne said: 'I work in pest control and this was a house we were treating for bed bugs. It was hands down the worst thing any of us have ever seen.'

The horrifying footage was filmed in Vancouver on July 12 and captures the moment Ryan Osborne walked into the house he was treating and saw the army of bugs he had to exterminate

Osbourne said: 'I work in pest control and this was a house we were treating for bed bugs. It was hands down the worst thing any of us have ever seen'

'The whole house was like this, it was absolutely disgusting.'

The footage shows thousands of bugs crawling on the floor and walls and bed.

Bedbugs are parasitic insects in the genus Cimex that feed exclusively on blood.

They aren't dangerous and they don't spread diseases a number of adverse health effects may result from bed bug bites including skin rashes and allergic symptoms.

The footage shows thousands of bugs crawling on the floor and walls and bed

Their color varies between dark yellow, red or brown and they live in cracks and crevasses in and around beds.

Despite their name, they will infest any area which will allow them to feed.

Typically, they crawl out at night and bite exposed skin to feed on blood.