I have hardwater stains on a ceramic(?) bowl and cannot get it clean. I'm not sure if the bowl is actually ceramic or not. It's 30+ y/o and there's no information on the bowl at all. I think it's more like those old square CorningWare "bowls." It might be some type of knockoff.
I could probably get the hardwater stains out with an SOS pad, but I didn't think they were supposed to be used on this kind of surface.
It's probably worth noting that I use the bowl as a cat water bowl and have a bad habit of forgetting to change the water everyday. I do change the water in the other bowls, I just forget this one all the time because it's in a room I rarely use. I guess the sitting water causes the stains because I don't get stains in the other bowls which are exactly the same.
Any suggestions on how to get the stains out?
I could probably get the hardwater stains out with an SOS pad, but I didn't think they were supposed to be used on this kind of surface.
It's probably worth noting that I use the bowl as a cat water bowl and have a bad habit of forgetting to change the water everyday. I do change the water in the other bowls, I just forget this one all the time because it's in a room I rarely use. I guess the sitting water causes the stains because I don't get stains in the other bowls which are exactly the same.
Any suggestions on how to get the stains out?