How hard is it?

Why can't I get my kitchen floors clean? Hello!??!? I have maple floors that looked fantastic when I moved in. Now they look awful all the time. I've tried every product on the market. The floor company says to use only Bona. This picture was taken just after I finished sweeping, vacuuming, dustbusting, dust mopping and then wet mopping. Perhaps you can't see the awfulness from the small picture. I even tried steam mopping. PLEASE PLEASE anyone, help!