Super Laundry Sauce

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I have been on a homemade laundry detergent kick lately, because face it, it’s a crapload cheaper than even the Costco laundry detergent. I’ve made liquid laundry soap in the past and liked it just fine. I also recently made another powder laundry detergent which we’ve liked just fine (side note, I used the yellow Purex Crystals in mine because I liked the smell way better). I decided on a whim to make the Super Laundry Sauce despite having nearly half of my Purex mix left.


Super Laundry Sauce from Budget101

1 bar Fels Naptha, grated
1 cup 20 Mule Team Borax
1 cup Arm & Hammer Washing Soda
4 cups of hot water

2 1-quart standard mouth Mason jars
Standard blender base, with blade base (the blade base will screw into standard mouth Mason jars!)

Usage – 1 Tablespoon per load of laundry. Put directly into barrel if you are using an HE machine, not into the detergent dispenser drawer. It’s creamy, so it might not come out of the dispenser drawer properly.

Grate Fels Naptha if you haven’t already.


Heat the 4 cups of water in a heavy pan on high heat. Mix Borax and Washing Soda together.

The two measuring cups are the mixed Borax and Washing Soda

The two measuring cups are the mixed Borax and Washing Soda

Once water is boiling add grated Fels Naptha, reduce heat, and stir continuously.


The directions say it takes 10-15 minutes for the Fels Naptha to dissolve, but I found it takes quite a bit longer.


When Fels Naptha is completely melted turn off the heat, remove pan from burner, and stir in the Borax and Washing Soda mix. Stir continuously until you can’t feel any granules on the bottom of the pan.


After the Borax and washing soda is dissolved pour the mix evenly into two 1-quart Mason jars. Add water leaving about 1 1/2″ of headspace. Put the lids on, and then turn the jars upside down as the soaps will solidify and the liquid will sink to the bottom. Since you’ll be blending it you want the liquid closest to the top.


Let sit for 4 hours and then blend. Sitting any longer will apparently make the texture grainy. I only let mine sit for about 3 hours, but it’s pretty chilly in my kitchen.


The soaps are solidifying … LaundrySauce-11



Let me warn you right now, put your hand on the jar. Do not step back to take a picture. Just don’t. I thought my jar was going to jump off my blender.


It looks good!


I’ve used it for two loads now. I’ve not had anything super soiled dirt wise, but it seems to work. I do have one beef with it. Having a front loading HE machine I cannot use the spray from the washer filling. I usually end up using an item in the washer to wipe the laundry sauce out of the Tablespoon. David refuses to do that, so he’ll be using the Purex mix only, which is a solid point against the Super Laundry Sauce. Also, I’ve got to leave one of my measuring spoons in the laundry room, which sucks a bit since I only have two Tablespoon measures. I’m going to give Stephanie a jar when I go see her in a few weeks, so I’ll have her chime in an update. In the meantime I’ll alternate using Super Laundry Sauce and the Purex mix.

**ETA – Please excuse the horribly crappy pictures. I didn’t feel like busting out my speedlight and the CFL bulbs in the kitchen are not the best lighting for photography. Actually, they suck for photography. **


23 thoughts on “Super Laundry Sauce

  1. Let me know how you like it overall in a few days or so. It looks just like the recipe I use, but mine takes more water, no blender, and I use about a 1/2 -1 cup at a time. I am always looking for easier methods. The first recipe I tried, after about a week I realized I just didn’t like it, so I am interested to see if this one turns out well!

  2. I use this recipe and I add a 1/2 cup of Pink solution to mine and it works great! I love it. I add a bit of essential ois to so my laundry has an orange-y smell to it. It’s great

  3. I just read another blog where the woman also makes this laundry sauce and she put the measuring spoon right in the wash every time. She has a front load HE washer.

    • My plastic measuring spoon is a little cheap and flimsy. I’m not sure how well it would hold up, but I can give it a try (and then I can return my metal one to the kitchen). 🙂

  4. Had a couple issues.. I followed this recipe to the T except my jars were a bit smaller at 750ml. I had another smaller jar because I expected to have left overs, but when I finished and poured the mixture into the jars, they only filled up just over half way. I have exactly two inches of room at the top of each jar. Which really baffled me since my jars were slightly smaller that the recommended ones. I even added a cup of boiling water when mixing in the dry powders, because the only other issue I had was them not dissolving all the way into the fels naphtha mixture, which was very hot still, right off the stove. I have them sitting turned over now as the directions state. Maybe when I whip them with the blender they will fluff and fill the jar up? I guess I’m just wondering if you can tell if I may have done anything wrong? Also, I was curious if I could store this in a different container as I would like to use the mason jars for something else. I have a large plastic container that has a pour spout lid but was not sure if the mixture would be too thick to pour out. Any advice would help, thank you very much!!

    • Hi Lina!

      The dissolving does take a bit of time and mixing. It’s been awhile since I did it so I don’t remember exactly how long it took for it all to dissolve.

      As for the not enough liquid to fill it up after you split up the mix into the jars you’re supposed to add more water until you have the 1 1/2″ or so of headspace in the jar.

      Putting it into a new container shouldn’t be an issue so long as it’s got a tight fitting lid so it doesn’t dry out (I live in a desert climate, evaporation happens quickly here). It is very thick and will not pour out, which is why it also cannot go into a detergent dispenser on HE machines.

      Hope that helps, and sorry I’m tardy to the party. 🙂

  5. I have 3 of the Zote bars, would that work for this recipe? I really want to use them up before I purchase the Fels Naptha bars (why spend money when something you have will potentially work?) I am JUST about out of the store-bought soap and want to make this right away (even talked the boyfriend into using it, which is a feat in itself!). We’re trying to “tighten our belts” quite a bit and save money, and this is the perfect way! Thanks a ton!

      • I have used F_N for Years but I have to say ZOTE works wonderfully & NO grating & SInce ZOTE is a bigger bar,. I only used a THIRD of a bar for the ENTIRE recipe..
        just cut bar into thirds & the 1/3 in half & placed one in each jar.
        love it !!

    • I commented below on how I made the recipe with Zote. In fact since my Zote bar was three times the oz req. I only used a 1/3 of a bar for the entire recipe.
      I Have used F-N for YEARS but have to say the zote is working beautifully .. Plus I didn’t need to grate it. OR wait all the times suggested in the recipe :__)

      • I stopped using all homemade laundry detergent when I found out it wasn’t cleaning my clothes and could be damaging my washer. Soap is not supposed to go in your washer, only detergent. My clothes ended up smelling as soon as they got wet. As soon as I stripped all the built up crap off of them (built up soap and funk not getting cleaned off) they smelled wonderful! I haven’t had an issue since I switched. Visit Laundry Love & Science on Facebook or on their web page for a detailed explanation about why homemade detergent shouldn’t be used.

      • never had a smell issue. must be your water.. different parts of the country have water issues.. Our water is very pure.. Also Fels N is a soap, & has been used for generations to wash clothes.. I don’t think it would have been used for so long if it gunked up the clothes :_) ruin a washer..? seriously ? never heard of that.. I do know a friend that has the huge New ‘magic’ high end washers on the market of late.. & she has a terrible oder problem with her clothes .. about drives her nuts !
        but to each their own. I love it & will continue.. seriously not something I loose sleep over..

  6. Hi,
    How much water do you add the second time? We don’t have mason jars in Europe and I want to try this recipe without borax and soda. Could you measur how much water to add? Thanks!

      • I’m going to say just by guessing from past makings that it’s between 1/2 and 3/4 of a cup of water. There are 4 cups in a quart. There were 4 cups originally of water plus the cup each of borax and washing soda. I’m guessing the soap is about a cup also. So original total amounts is 7 cups between two jars making it 3.5 cups each. Some water evaporates when melting down the soap though. So maybe 2/3 cup is the safest bet!

      • I finally remembered the Fels Naptha to make another batch and then found out I’m out of quart jars. *rofl*

        I have some in my garage with questionable pears and peaches that I’m going to get cleaned out as soon as my sick 6 year old stops using me as a human pillow. 😛

  7. I’ve used this sauce for 2 months now. It’s gotten out spaghetti sauce and red clay mud without pretreating. I love it. I use her ‘no cook laundry sauce for dummies’ recipe and it’s fool proof. You can find that version on her website

  8. I use one of those cookie dough spoons with the rubber bottom. I push the sauce out. Did your sauce get thick like cold butter? I’m afraid it won’t dissolve all the way in the washer, so stopped using it.

    • I just went and stuck my finger in the jar I have left and it has the consistency of butter cream frosting (minus the whole melting on my finger thing). I wonder if adding a little water to it and blending it again might remedy the issue…?

  9. LOVE the recipe. although I didn’t wait any of the time suggested . & it worked perfectly .
    I used just a 3rd of a Zote bar . ( their bigger then fels naptha )
    I then cut that in half & put each piece in a canning jar.
    poured over the boiling water. let sit an hour or two ..stirred..
    added 1/2 each of borax & washing soda to EACH jar..
    put that directly on the blender & within seconds I had the creamy mixture.
    I LOVE it ! it has stayed creamy for weeks & I love using just ONE Tablespoon her load ..

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