What could have caused this corrosion on my faucet?
I had a new kitchen faucet installed a recently. When my handyman removed the old one, shown here, he couldn't figure out why it was so corroded and asked me what kind of caustic cleaning products I'd been using. The old faucet was only about 3 yrs old. I use normal cleaning products so I have no idea. I use powdered cleansers mostly, but not anywhere near every day and that's usually about it. Any ideas? I don't want my new one to do this. The old one is a Price Pfister, but not an expensive one. I don't remember what brand the new one is, but it was more expensive. I hoped by paying more money, it would work out better. On the old one, the sprayer kept coming loose from the sink and my handyman said it was cheaply made.