Coffee stains on carpet

[QueenofWhatever]

DD15 has spilt coffee on her bedroom carpet. Despite lots of attempts including professional carpet cleaning, the stains haven’t come out.

When I bought them, the carpet shop guy said you can can put anything on these carpets including bleach as they’re acrylic. Any suggestions?

Have you tried a diluted bleach solution already?

No, not yet. I avoid bleach for environmental reasons but it’s getting to the point that I’m willing to try it. The stains seem to be getting darker over time.