• BougieBirdie
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    517 hours ago

    Friendly reminder that using bleach to clean cat pee can fucking kill you and your cat

    I mean, I’d be kind of surprised if it did kill you, but ammonia and bleach mix to make an extremely toxic gas

    • @[email protected]
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      130 minutes ago

      The issue is not ammonia (at least not when it comes to urine) but rather urea, which also reacts with hypochlorite to create chloramines.

    • @[email protected]
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      7 hours ago

      Looking at this article, there’s only millimolar concentration of ammonia in feline urine (mean 118mM, range 16.9-292 mM). I’d be very surprised if anyone was able to generate significant quantities of chlorine gas by mixing bleach with cat urine.

      • Lvxferre
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        115 hours ago

        Thanks for sharing this data - it’s great.

        It actually makes sense; if cat urine contained ammonia the smell would be gone once you washed your cat’s impromptu litterbox, since ammonia is both volatile and highly soluble. And yet it keeps stinking - this hints that there’s something else there producing that ammonia by decomposition. (Probably proteins. Cats eat a lot more protein than we do.)

        Note: chlorine gas is the one that leaks from an open bleach bottle, and gives it a distinctive smell. The ones created by reacting bleach with ammonia are chloramines, considerably more poisonous.

      • BougieBirdie
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        55 hours ago

        Isn’t chemistry all a matter of scale though? I admit it’s not my field

        I mean, if the cat pees on the rug and you clean it up right away, that’s probably not a big deal. I imagine it’s a different story if you’re cleaning out a hoarder’s cat colony in a poorly ventilated area and don’t dilute the bleach because you wanted something stronger

        • @[email protected]
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          12 hours ago

          Yes, from my personal experience. We mop up dog pee in the house all the time with hot water and a splash of bleach and it’s totally fine. It bubbles a little when you rinse the mop in the bucket and you can definitely smell the reaction occurring.

          However, I also once cleaned the back patio of my old apartment of a summer’s worth of dog pee on concrete with about a gallon of straight bleach and had to wait for it to air out for about 20 minutes because it was a definite chemical hazard. As in, eyes burning, and difficult to breathe. I started pre-rinsing with the hose to dilute everything prior after that.

          • @Nurse_Robot
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            -155 minutes ago

            … Why are you constantly cleaning dog pee indoors?

            Why was there so much dog pee on a concrete patio?

            Neither of these things scream “good dog owner” to me.

      • @Iheartcheese
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        36 hours ago

        So you’re saying there’s a chance.

    • @Nurse_Robot
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      87 hours ago

      Is it good on hotdogs and pretzels?