What could be causing this ammonia smell?

Do you have old wallpaper and/or the old type of plaster? Like the kind over lath (sp?) board? I think it’s called horsehair plaster. We lived in an old house that we ripped all the walls down from and put in drywall and peeeyoooo did it stink in the summer!

Could something have gotten into a crawlspace, up in the rafters or under the floors? raccoons, squirrels, bats or other wild animals will sometimes make their homes in human houses. And they can leave a stinking mess.

No wallpaper at all, it’s all paint.
I don’t know if something got into a crawlspace..wouldn’t it have a stinky smell to it if something died? That happened at my parents with a mouse and it smelled awful. I also don’t even know what or where our crawlspace is lol.

We’re wondering about the pipes or something in the air conditioner (it’s central air) since it’s all over the house.

I’ve had several experiences with ammonia smells, from both cat pee and from water damage (our basement gets flooded rather often, unfortunately, due to melting ice in the spring and occasionally overflowing septic systems). Sometimes rugs wet from water damage smell a lot like they’ve been peed on. If it’s in your entire home and you can’t find the source of the pee with UV lights, there may be no pee at all. Although, sometimes even after you clean cat pee, the smell still lingers for quite a while…

What kind of sewage system do you have? My family has a septic tank, and when the basement floods, it’s AWFUL.

Whatever it is, good luck with it! If it’s water damage, get lots of fans and air the place out, see if that helps.

Possible you only cleaned the top of the urine pee but the rest has settled in the foam under the carpet. You may need to rip it all up. Especially if it was dry before and now that you wet it in trying to clean it the smell was made stronger till it fully dries.
Sometimes my pipes smell bad. Especially garbage disposals.Try closing your bathroom doors and put a plug in the sink and see if that makes the smell lessen. If it does that it may be your sewage.
Another thing that tends to smell may be your diswasher. If you don’t run it for days it may start to stink.
I think I read somewhere once that fertilizer can smell like ammonia.
Good luck.

is there a meth lab next door?

@jazmina88 Funny thing, I always refer to my one neighbors fiance as a meth-head because of how she looks/acts..her teeth are either really bad, or she’s done some hard drugs. Ugh.

well…....maybe it’s not your cats at all…....maybe her teeth are bad because of the hard drugs. is the smell outside????

I had this problem in my house which is being renovated. As a result, not all of the facilities are used on a regular basis. In fact, some of them not at all, since we’re staying with family until all the work is done.

We tracked it down to (at least) one of the P-Traps where the water in the trap evaporated over time. The gases for the main sewer line were entering through the drains. It was in the middle of summer when this occurred and we were experiencing 100 degree temps.

We just ran water through all the facilities and the problem disappeared. Note: This would only happen after the course of weeks. If a home’s facilities are used regularly, this would not likely be the the source of your problem. However, all it takes is any one P-Trap for the condition to occur.