Rust Marks on Patio

Hi,

I recently put down weed and feed on 2 lawns, unfortunately a few grains of the powder have fallen on the adjacent patio and have caused rust marks on the stone. Is there any easy way of removing them, so far i've tried vinegar and bicarbonate of soda but although both have faded the stains they have not removed them. Can anyone assist ? Best

 

Hi there @Colin Lowing and



Try some bleach , but test out on a less conspicuous area first especially if you have coloured stone.