Just read through some of the comments as I would like to know – never knew eucalyptus oil was a thing to get stains out but I will keep this in mind.

Alot of useful tips to take on board!

Cool! Really interesting comments read on this! Good topic as well!

this is a hard one – if you can be bothered, bicarb and lemon juice in a paste leave for a while and wash. Also, can do napisan, preen and a long wash… this can work too

There’s a new napisan with reviews on here. Personally if its your husband’s work shirts, I think burning them is the only way. If they’ve been ironed or through the dryer the stain has been sealed in. You can get pads for the underarm area of workshirts from woolies. Clinical protection deodorant works too but I worry about the chemicals in this and the impact long term

A paste of Napisan; rub in and then soak overnight. Good Luck!

soaking overnight is something like napisan should help

Napisan paste will work if the stains are not coming out with the wash.

proper preparation by using deoderant which prevents heavy sweat stains

there are some good comments here

You should be able to get it out if you clean it rightaway in the washing machine… unless you left it for too long

Vanish made into a paste takes care of the smell & discoloration.

Some good advice there below.

A pre wash soak and scrub should help 🙂

Pre wash spray and then soak.

id suggest using nappysan 🙂

I’d try soaking in napisan overnight and hanging out in the sun. If that doesn’t work you could try making a paste out of napisan and water, spread it on and leave it for a few minutes before giving it a rub and rinsing it

What did you end up using?

Napisan, soak and wash 🙂

i find napisan oxy action does the trick for most stains. make up a paste and let it sit for half hr or so then rinse and wash as normal. I often also put some in a spray bottle with water and shake it up to mix it through. Then i have a stain remover spray as well instead of having to buy a separate one while shopping saves money.