An unwanted visitor has been spotted slithering through the stationery aisles at a South Australian Officeworks.

A brown snake reportedly snuck under the door of Noarlunga Officeworks this afternoon.

Customers were cleared from the store as soon as staff noticed the slippery creature, a witness Michael told 9News.

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"Snaked moved through a number of aisles while the team watched and waited for snake catcher," Michael said.

Once the snake catcher arrived, Michael said it was removed in "three seconds".

"Business as usual followed," he said.