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What to do with old soap?

 
pollinator
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Location: Derbyshire, UK
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I used to make soap, and to that end and several kilos of old soap- its brittle and discoloured and has various random natural fragrances. What can I do with it? I can't sell it or give it away- rather strict rules about that here and I no longer have the paperwork.

Do you know any crafty or useful purposes? I can give a limited amount away as xmas gifts to family- but I can't give it away to charities or anything like that.
Can I compost it?
 
pollinator
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you can grate it up, mix the shavings with hot water, and use this "liquid soap" to wash your clothes/dishes/floors/etc. (in my experience, depending on what your soap is it may require more or less effort to melt it completely)
or you can give this liquid to kids to make bubbles

give a bar to kids to soap up the bottom of their sleds
keep a bar outside for when you go out to your garden, you're supposed to claw a bar of soap with your nails so that you don't get dirt completely caked under your nails if you're like me and go work in the garden in the afternoon before dinner. I forget 98% of the time and generally have no nails anyway, but that's what I read

a few kg is a lot of soap, i know that doesn't help too much, but I love using homemade soap at home to clean EVERYTHING with (floors, cars, etc) and can't imagine getting rid of it!!
 
pollinator
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I save the ends of (bought) bar soap, and grate them up to make both soft soap (it can refill liquid handwash or shower gel containers) and liquid laundry soap.  If I don't have enough ends saved up by the time I need new homemade laundry soap, I'll grate up a full bar and not bother making liquid but mix it with washing soda to use as powder.  But the liquid is really useful (and it is just grated soap and washing soda dissolved into water) for cleaning--I use it as an all-purpose cleaner, and am trying to convince my family to use it for washing dishes--it makes no suds so it's a hard sell, but it still cleans just fine.
 
Charli Wilson
pollinator
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I made more soap.. incorporating some of the many kilos of old soap! The biscuit shapes are half grated new soap, half grated old soap of a useful colour/fragrance- moulded into new soaps!



I've also got a bar curing where I grated lots of old multicoloured soap and put it into a new ivory bar- it should look like confetti when I cut the bar.

I'm not sure making more soap necessarily counts.. but the new stuff is good for xmas and brrthday presents!
 
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Some possible uses and gift ideas:

1. The soap scraps can be soaked in water with a few spoonfuls of cheap vegetable oil to make 'White Oil' - used in the garden on fruit trees and roses to kill scale bugs, aphids, etc.
2. Place it in an old sock and use it to wash dishes
3. If it is nicely perfumed, place it in a plastic bag, pierce the bag with a few holes, and hang it in the wardrobe or with sheets/towels to make them smell nice. It may also keep moths away.
 
pollinator
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I use left over soap to help ease tapping and drilling of steel

I also use it to help make driving screws into wood easier

I use soap to slicken two pieces of wood if there is sliding motion (moving buildings)

I use soap to quiet a pipe rubbing on a joist and causing it to squeak
 
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