Removing Wood Varnish from Carpet?

I tried everything had nothing to lose but to replace carpet so I tried WD-40. I sprayed it on, let it sit for a few minutes, and pressed it out. It took a while and a few cans, but it was cheaper than replacing a whole carpet.

Source: I had tried everything else from peroxide, ammonia, hairspray, acetone.

By Darlene from WV