Hi, We seem to have multiple blue stains on our Kitchen Vinyl, no idea the source and what ever I try I cannot remove it has anyone seen this before? the Flooring has been down for just over 4 year and they have started to appear recently. originally I thought it was pen marks from kids but the colour does not match on a test piece of the Vinyl. The Vinyl is laid on Concrete slap. I have attached the photos of these random marks. Any products you can recommend for trying to remove it?
Thanks for your reply, I current don't have either at home so tried warm water and a green scourer sponge and it's nearly gone with plenty of elbow grease. Thank you
