Good for you, Flowerpot. I’m glad that works for you. If your tiles are porcelain you might find that a stripping pad, rather than a brush, upon the end of your broom handle, might do a better job. I can’t use a broom for more than a few strokes, which is why I use a cordless scrubber and I’ve found that stripping pads fitted to it, rather than brushes, work best. I’m hugely impressed that you can get away with just bleach for a whole week! I might give that a try tomorrow. I presume you mean sodium hypochlorite and not hydrogen peroxide? For everyone else in this forum, who has Altro rather than tiled flooring, brushes or soft pads are what you need, not stripping pads. Also, I guess you would need gentler chemicals.