A video posted to social media has shown the moment a highly venomous Red Belly Black was caught in an office toilet at Yamanto yesterday.

The intrusive reptile was retrieved by a local snake catcher, Norman Hill who said the snake was "very calm".

Hill and his wife Sally operate the Ipswich-based N&S Snake Catcher Ipswich, Brisbane & Logan.

He said during this time of the year snakes are looking for one of three things: food, water or shelter, which is why it probably found it's way into the office toilet.

The latest advice on how to treat a venomous snake bite

Do NOT wash the area of the bite or try to suck out the venom. It is extremely important to retain traces of venom for use with venom identification kits. 

Do NOT incise or cut the bite, or apply a high tourniquet. Cutting or incising the bite won't help. High tourniquets are ineffective and can be fatal if released.

Do bandage firmly, splint and immobilise to stop the spread of venom. All the major medical associations recommend slowing the spread of venom by placing a folded pad over the bite area and then applying a firm bandage. It should not stop blood flow to the limb or congest the veins. Only remove the bandage in a medical facility, as the release of pressure will cause a rapid flow of venom through the bloodstream. 

Do NOT allow the victim to walk or move their limbs. Use a splint or sling to minimise all limb movement. Put the patient on a stretcher or bring transportation to the patient. 

Do seek medical help immediately as the venom can cause severe damage to health or even death within a few hours.