Help!!! Tomato pesto stain on pale green carpet!

Have you left the carpet stain remover on for a bit ?
I use the remover initially just to get the worst off
Soak up with kitchen roll
and then I reapply and leave for couple hours dabbing every so often with kitchen roll.
Good luck

On google it suggests a mixture of white vinegar and water in a spray bottle
Rubbing from the outside inwards into the middle of the stain.
Maybe try on an area of carpet out is sight first.

Thank you cherrytree. I did leave the Vanish on for about an hour, but I know it will leave paler patches. I have cats so am always cleaning up blood and gore!
I will try the vinegar.

I have removed all sorts from my cream carpets using Fairy Liquid Shysal basically I make a strong, warm frothy liquid with a good squirt of Fairy, and use a circular motion, blotting regularly with paper towels. Good luck.

I've been having success recently with Stain Devils. You can buy them specifically for oil/fat ... tomato/curry stains .... etc.

As they are not now available in all supermarkets like they used to be, I order them from Amazon.

I would redo the Vanish power foam shysal , wow that pesto certainly traveled!

I use washing up liquid for most stain removal, but it's best done asap.
A paste made of washing powder may work too.

Thank you all for your ideas. This morning I have a clean carpet, having followed several of your suggestions. A friend recommended hand sanitizer, which he uses on all stains, and this removed the very last hint.

Today I am going to have a clear out of the cupboard from which it fell. It contains some out of date stuff which I am unlikely to ever use. Will also stock up on some Stain Devils.