this post was submitted on 30 Aug 2025
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123
What is a good reusable bottle that isn't a mould farm? (lemmy.dbzer0.com)
submitted 1 week ago by cerebralhawks@lemmy.dbzer0.com to c/asklemmy@lemmy.world
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Kind of a rant — I drink water and flavored-water beverages, and I don't wanna buy 24-packs of water and trust my local municipality to recycle. Maybe they do, maybe they don't. Either way, it's not recycle, it's "reduce, reuse, recycle." I'll drink a Gatorade (Zero) and reuse it a few times and then toss it.

But if I want a reusable bottle — there's one by Aladdin (Thermos) I like, and one by Zojirushi, I've bought two of each over the years. Just tossed the Zojirushi. Zojirushi is a Japanese brand, very high quality, but a bit over-engineered. It's got this rubber gasket and plug that, you can clean them daily, they get black spots. Not sure if it's mould or what, but it's kinda gross and I don't like it. The Aladdin/Thermos one is a bit better, didn't think there was any mould anywhere until I dropped it, the cap flew out, mould farm inside! Nowhere that touched the beverage so that was nice. But I'm kinda done with both of them. I would rather just waste plastic than risk drinking from a mouldy reusable cup.

Are there reusable bottles that aren't mould farms?

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[–] tal@lemmy.today 8 points 6 days ago (1 children)

You're probably going to have the easiest time just cleaning them periodically.

If you want to have something that's intrinsically antifungal, instead of stainless steel, you could get a copper-alloy water bottle, like bronze or brass.

https://en.wikipedia.org/wiki/Antimicrobial_copper-alloy_touch_surfaces

Antimicrobial copper-alloy touch surfaces can prevent frequently touched surfaces from serving as reservoirs for the spread of pathogenic microbes. This is especially true in healthcare facilities, where harmful viruses, bacteria, and fungi colonize and persist on doorknobs, push plates, handrails, tray tables, tap (faucet) handles, IV poles, HVAC systems, and other equipment.[1] These microbes can sometimes survive on surfaces for more than 30 days.

I wouldn't bet on it stopping growth on the gasket, though.

It looks like this claims to be copper (which if correct, I would think would be really prone to denting):

https://www.amazon.com/Adonai-Hardware-Hammered-Copper-Bottle/dp/B09MZ9VYJS

This vacuum flask says that it has a copper internal lining:

https://www.amazon.com/OUTSIDER-Stainless-Vacuum-Insulated-Bottle-Thermos/dp/B0BX7C1MDK

[–] corsicanguppy@lemmy.ca 3 points 6 days ago

I suddenly understand why every handle, kick plate, knob and hinge were made of brass on the infantry bases I saw it was at.