I love adding a few drops of essential oil.

Double strength vinegar. I would soak it jn vinegar before washing

Vinegar in water. dab on and off. Then use a little dishwasher detergent in water and dab on and off.

Add a cup of vinegar to the final rinse and dry sheets in the sun.

Cool to know! There really interesting comments on this!

I use vinegar for odours and stains.

We use a nice and gentle fragranced washing powder fab allure spice and also the fabric softener. smells amazing!

I do a wash with vinegar and some eucalyptis drops

vinegar is good but it can make the colours run sometimes, there is also disinfectant you can get for clothes that works quite well or put in a cap of napisan (or similar) and fabric softener in every load.

Dettol Laundry Sanitiser, works like a charm.

a couple of drops of lemon juice

vinegar in a wash cycle

you can try canasten hygiene rinse

There is some good advice below.

What did you end up using?

Soaking them in a soaker like napisan or equivelant will help.

White vinegar takes the smell away from our clothes

Hope you were able to solve the problem

Check google. They have a lot or remedies!

I just use regular scented washing powder and fabric softener on mine. My daughters just been through a terrible bed-wetting stage and had no problem with the urine smell hanging around after the wash.