A new code of conduct that warns patrons with "offensive odours" and those "lingering aimlessly" won't be tolerated at the Kingston, Ont., public library is coming under fire from critics who say it targets homeless people.

A group called Libraries are for Everyone says that while the new rules don't explicitly bar homeless or poor people from using the library, they will have that effect.

The group says the guidelines "may do more to stigmatize and marginalize some of the most vulnerable library patrons."

It is hoping to convince the library board to repeal the changes and launch a public consultation at its monthly meeting Wednesday night.

The library board has defended the policy, which was passed at its meeting in March but only came to the public's attention a few weeks ago.

In a statement posted on its website, the board says the guidelines are not aimed at a specific group and stresses they are required to ensure the library remains a safe space.