Borax

[Renaud]

One of the really day-to-day useful uses of Boric Acid (I believe borax is also effective) is to add it in powdered form to shoes to kill any bacteria growth.

I started doing this a few years ago after watching a video from Big Clive where he mentioned it, and it has really made a difference. No more smelly shoes, socks or feet and no fungal growth.

Seems silly but living under the tropics and macerating in closed shoes all day does have these rather annoying side effects, and whatever shoes you wear, sweat and a warm environment are a breeding ground for bacteria.

Adding about half a teaspoon of powdered boric acid to each shoe at least a couple times a week makes a huge difference.

Best is in new shoes, they will smell like new even a couple of years later. I'm not even exaggerating when I say that at the end of a long day, socks only smell of fabric softener and feet smell of well, nothing.

[ninetenfour]

Another solution is the spray them with isopropyl alcohol. I do this with sandals if they ever start to smell. Works great. Smells for a bit while it evaporates but then it is fine.

Boric acid still makes nervous but it is completely safe?

[gruez]

>Adding about half a teaspoon of powdered boric acid to each shoe at least a couple times a week makes a huge difference.

Wouldn't that lead to a powdery build up after a while? Do you need to eventually shake out the powder?

[londons_explore]

Are you not concerned about testicular atrophy? That's the reason it's banned in the EU...

[amelius]

Would this also help against yellow(ish) toenails?

[bityard]

We've been making laundry detergent for our high-efficiency washing machine out of borax, washing soda, and fels-naptha. This is one of the best household hacks we've ever done.

It not only does a better job of cleaning the clothes than Tide and the like (bonus: no perfume smell), it's much cheaper as well and has saved us hundreds of dollars in detergent costs over the last few years.

1 gallon of tide = $15, 5 gallons of home-made detergent = less than $2. The only downside is that powered washing soda is not carried by every grocery store these days. (And it means you need to store 5 gallons of detergent somewhere.)

We use this recipe but we don't bother to boil the bar soap: https://www.mrshappyhomemaker.com/homemade-liquid-laundry-de...

[boboche]

One use I have for borax is making cheap slime to remove dust on tough to clean parts. OLd PCBs with lots of electronics that wont air dust easily, car air vents, etc.

Most common mix is - Dissolve 1 teaspoon of borax in 1/4 cup (2 oz) warm water. - in a separate bowl, Mix 1/2 cup (4 oz) kids glue with 1/4 cup of warm water. - once everything is mixed properly, you can also add food color, glitters and whatnot. I stick to white so I can see the crap I capture and when its saturated properly. - Mix the content of the 2 together a lot

The resulting slime can be used later when sealed properly.

Don’t skip the water-glue mix, it helps with the end result.

You can capture a LOT of dust without creating airborn particles, or have something fun for the kids to play with.

[jjeaff]

I make this slime with my kids. I also bought some slime meant for detailing cars. I didn't even realize it was basically identical to the slime we had been making until I opened it.

[pengaru]

Do you let this dry in place before removing it, or does it just stay together when you press it into dusty surfaces immediately pulling it away without leaving any residue behind?

[perihelions]

One minor application not on that list is as an electrolyte in capacitors.

https://en.wikipedia.org/wiki/Aluminum_electrolytic_capacito...

Anecdotally, burst electrolytic capacitors in electronics make very effective ant traps. I don't know which component attracts ants (is it the glycol?), but the boric acid component is an effective insecticide (as OP discusses). Commercial ant products are based on borax as well.

https://www.nytimes.com/wirecutter/reviews/best-ant-killer/

Anecdotally, you *don't* want your electronics to dual-class as ant traps.

[GravitasFailure]

Of course, there's Crazy Ants that just love electronics in general.

https://www.livescience.com/37720-crazy-ants-invade-electron...

[nashalo]

It seems very weird to me that borax is so widely used in contact with humans in a variety of settings like ocular care and anti foot odor, because I use it as a flux in silversmithing and there are warning labels everywhere about the flux that it's reprotoxic, carcinogenic and mutagenic. Anyone knows why is that? Are my labels overcautious?

[ramchip]

I would guess there's more than borax in it:

> Traditionally borax was used as a flux for brazing, but there are now many different fluxes available, often using active chemicals such as fluorides[9] as well as wetting agents. Many of these chemicals are toxic and due care should be taken during their use.

https://en.wikipedia.org/wiki/Flux_(metallurgy)#Brazing_and_...

[autojoechen]

From the toxicity section (https://en.wikipedia.org/wiki/Borax#Toxicity) it seems like the concern is most about ingesting borax in large quantities or breathing in the dust. And also being cautious on potential health affects:

  Since people are already exposed to boric acid naturally through their diets and water, Health Canada advised that exposure from other sources should be reduced as much as possible, especially for children and pregnant women. The concern is not with any one product, but rather multiple exposures from a variety of sources.

[refurb]

Borax flux is a mixture of boric acid and ammonium chloride and then you are dumping it into molten metal where it likely combines with metals and gives off gases.

Kind of different than just boric acid itself?

[julienmarie]

Borax is used in most sturgeon french caviars to preserve it. I guess in small quantities.

[ethbr0]

Also, disodium octaborate tetrahydrate (aka Tim-Bor / Bora-Care in the US). Roughly: glycol + borax + boric acid.

Spray it on lumber, and it absorbs into the wood, killing termites, powder post beetles, carpenter ants, mold, and algae.

For the lifetime of the lumber, no reapplication necessary.

Cannot recommend it highly enough for exposed crawlspaces / basements in humid climates.

[BoraxYeltsin]

A few here appear to treat borax and boric acid as the same product, which they aren't. For anyone getting any new and exciting ideas, maybe explore the difference and their significance first.

[cwingrav]

Borax is incredible stuff. I used it as an insecticide in Florida. I could puff it into places behind cabinets and appliances. It doesn't kill by chemical means, but by getting stuck in insect chitin, ripping it apart and then desiccating it. It's safe for pets too. Amazing.

[ninetenfour]

Borax doesn’t do that. It actually affects the nervous system of insects, see here: https://homeguides.sfgate.com/insects-borax-chase-away-kill-...

I think you are thinking of silicon dioxide which does get into the chitin of insects: http://npic.orst.edu/factsheets/degen.html

[ChrisMarshallNY]

I remember reading that.

I lived in downtown Baltimore, in a row house.

I had roaches. Not the big, giant, kind, they get in the tropics. These were smallish, basic, tough-as-nails-will-still-be-around-after-the-apocalypse roaches.

When I put out borax, they immediately took out little straws, and started snorting it.

[AptSeagull]

Diatomaceous earth work by getting under the carapace and puncturing the insect - causing dehydration which kills the insect.

[Foobar8568]

Another use is to kill cockroach. I remember an invasion of cockroach in an old flat I was renting, most likely linked to construction works next to our building, I made a mixture of borax+condensed milk, and they ended up disappearing.

[dugmartin]

We use it in our pool to raise and buffer the pH without affecting the alkalinity. It is much cheaper than the equivalent "pH up" pool chemicals and we order it from Amazon in bulk. I do wonder what the UPS person thinks when they deliver the huge heavy carton labeled "BORAX" - meth lab?

[seiferteric]

I use it in my spa and the buffering effect makes the PH so stable I barely have to do anything to it for weeks at a time other than occasional shock and refill the bromine tabs. Really made spa maintenance much easier.

[xyzzy21]

I was just in Trona and Boron today - nearly half of the world's borax and boron chemical supply come from these two places in the Mojave. From saline pumped from under dry lakes.

The same places supply much of the soda ash and bicarbonate of soda for the US. Plus sodium sulfate/glauber's salt.

[vvs29]

Well, we use boric acid in powder form on carrom boards. It reduces the friction between the wooden board and the coins/striker. I've tried different purpose built carrom board powders, but nothing else has the exact balance between speed and control for me.

[ggm]

I've got a small jar packed with pyrites contaminated gold panning metals from Gympie, if the borax method is simple I'd love to try it.

[burn_cycle]

I actually watched someone do this recently. With the right equipment, it works surprisingly well.

[s_Hogg]

Fantastic stuff for mould suppression. Make a paste and rub it on the wall, you'll have nothing to worry about for months.

[turtlebits]

Borax is great for cleaning/degreasing sinks, ceramic and stainless. It also really shines up chrome plated faucets and mirrors. Really anything non plastic in the bathroom.

Works way better than baking soda but does leave a grit behind, so rinse well.

[TradingPlaces]

This is how they used to get borax out of Death Valley before railroads https://en.wikipedia.org/wiki/Twenty-mule_team

[sirsinsalot]

I had great luck with Boric Acid powder to tackle carpet bugs. Nothing else won that war.

[jojohohanon]

The worst thanksgiving menu ever. I can’t find the menu itself (basically

Borax Soup Borax Salad Borax Turkey Desserts Borax)

But it is referenced here

https://www.wpr.org/borax-dinner-party-kickstarted-fda

I will go look over metafilter archives, since I imagine that’s where I read this originally.