I use this soap to remove new and old stains. Oil and grease off my husbands clothes. You can also wet the soap and rub on the stain and leave to dry if you can't wash it straight away. Then when you are ready to wash just throw it in. With 3 kids I need something that works everytime.
Easy to use, price, effective, reliable.
Nothing - works well in conjuntion with Sard soaker

I always have a bar of Sard Wonder Soap in my laundry. I use it mainly on my son's work shirts which always come home grubby on the front. I've used a spray stain remover on his shirts before but Sard soap seems to work best. I just rub some of the soap on the front of his shirts then with a nail brush, I give a gentle scrub then straight into the washing machine with the rest of the wash.
Works every time

I bought this and used it often in queensland as its one of the cheapest and most effective ways to get stains out. It does require some elbow grease but its quite easy just to wet the block and give your clothes a little rub or a scrub depending on the severity of the stain. It is so much cheaper then any of the other spray or powder stain removers. I have to say though since moving to south Australia i haven't been able to find in it our local coles or woolworths which is a bit of a disappointment as it used to be my main stain remover.
great price and great product
hard to find in the supermarkets

Sard wonder soap is a product that both my mum and grandmother have used for as long as I can remember. It is a great product to get rid of heavy stains on both white and coloured fabrics. I know my mum used to use it on my fathers white football clothing that were covered in not only grass stains but covered in mud. Always the result was fabulously white clothes. Another big plus is that the bar of soap lasts so much longer than the spray variety so therefor is a much more economical way of doing the laundry.
A long lasting cost effective way to treat stains. Removes even really stubborn stains.
Requires some physical effort but well worth it to see clean and fresh laundry.

Overall, I love this product, and always have some in my laundry.good for giving dirty clothes a quick rub/scrub and find stains come out well.Its nice and cheap and lasts a long time. good to use to help eek out the more expensive soakers, although I give my clothes a rub, lather some sard soap in the water, and leave it there to soak for a bit, and find this works well.
cheap, readily available at most stores. Good Old fashioned time tested product. shifts stains well, aldo good for washing basins etc.love the clean smell :)Stays nice a solid, not gluggy when wet.
none that I can think of.

This is a good product to always have around. It works well to lift stains if used quite soon after and can also be used as an ingredient to make homemade washing powder. I like the fact you can find it just about anywhere. It is a cheap and affordable addition to your cleaning routine. The soap keeps quite well and does not go mushy after being used as long as you dry it out.
Very cheap to buy. Has a multitude of uses. Does a good job of cleaning stains. Can be grated up and used to make homemade washing powder as well.
There is none,

I buy this soap regularly it gets used on all fabrics includeing carpet removes all stains and its cheap i wouldnt bother with expensive soakers again

I throw a cake of soap in the bucket of clothes and make it all soapy soak over night and its very rare there is any stains left A+++ Product
Removes all stains never had one stain to not shift

I always scrub clothes with any food stains on them before they go into the washing machine. Its very rare that after ive scrubbed the clothes and after they have been washed that there is a stain still present. The cake of soap lasts a long time so you dont need to buy it every month, its cheap enough anyway it you did need to buy it more regulary. This is a really good pre soaker and everyone should give it a try.
Helps remove stubborn stains from clothes. Its really cheap to buy. It also actually works.
Nothing its a good product.