Vinnies logistics manager Will Challis is overseeing works at the Mowbray warehouse, on Invermay Road, to help the growing number of stores in the state's North.

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"We are setting up rooms for the people helping us sort, to separate [donated items] into categories," Mr Challis said.

"We are trying to make it easier at the shop level."

There are similar warehouse facilities at Devonport and Hobart.

One negative to increased donations is people dumping rubbish and broken goods at donation points that cannot be recycled or sold to assist vulnerable people and families in need, chief executive Lara Alexander said.

"We are trying to reduce landfill and look at how best we can reduce our footprint," Ms Alexander said.

"Ultimately we're the ones who bear the costs if donated property cannot be sorted in an orderly way."

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