Permanent marker on tile grout?

[Curlybrunette]

Hi,

A few years back my son and his friend and thought it would be great fun to go crazy with permanent markers, they were only 3 but I'm still seething with anger and being lazy gits we've never dealt with it. We've now decided to sell the house so need to try and clean it up. Do you think there's anything that will cover up black permanent marker off grout? If not how easy is it to re-grout, we aren't that great at DIY and certainly have never grouted before.

Thanks

Scrape the old grout out and re apply new its easy, a good tile shop will tell you how.
You might remove it with nail polish remover but it could also make it worse and spread it out, try a small patch witha cotton bud

Paint it.

(The grout, not the tiles!)