How do I remove yellow baby poo stains?

[ThomasTankEngine]

A 40 degree wash and non bio isn't working.

sunshine
hang em out and the daylight bleaches the stains even works in the rain

good job it works even in the rain!
I shall try that, thank you.

Any one else with further advice just in case...

same advice thomas. sunshine.

Yup, sunshine. Works miracles.

ok cheers everyone.