To think stains can come out of white / pales?

[MrsP2015]

Here for traffic. Need a wash expert!

Should I just chuck white socks when the stains don't wash out on a 40 wash with a pre soak of vanish powder (£8 tub one).

I'm sick of throwing the white/ pale socks/ tops away when there's stains- even the grubby dust doesn't seem to come out of socks.

Have to be careful due to dc's eczema.

Any ideas?
Thanks

I was coming on to say Napisan as well. I also use ecover bleach because I have to be careful with DS as he gets itchy with strong bio stuff so use those with non-bio. And agree hang in bright sun if you can find any

I prided myself on getting any stain out of cricket whites!

If these are stains that have already been hot washed in, you might struggle. Fresh stains can all be got out with a cold soak overnight

I accidentally used a window cleaner instead of stain removing spray. Left the white wash in laundry basket.
Hot washed a few days ago and the stains have gone! Grass on white t-shirt. I feel conned!