I have a Siberian Husky who eats rocks. Sometime Sunday night she chewed up a triple-edge razor. I found it in the bath tub Monday morning and she had chewed the plastic and had been chewing on the blades. She didn't cut herself because there was no blood to be found. I had the razor behind the shower curtain, out of view, but she still found it. So, please don't criticize me. I know now to put it out of reach. What would possess her to chew on it?
Dogs love to find things, and anything they find can be fair game. It sounds to me like you either need to find a safer place for dog (such as crate or x-pen) when you are not around. Or shut all doors. This could have been a very big disaster. I had a client, a std poodle that liked to get into the trash. One time her parents forgot to shut the bathroom door. She got into the bathroom trash and ate a razor, and later died from the injuries.
Alot of people think crates are mean, they are not. dogs love them like wolves like dens. Most will seek their crate when scared or nervous. It is a much safer place then running around a house chewing on fun things they find.
I was home when she did this. I treat my dogs very good with lots of love and treats. I just don't know what possessed her to chew on a razor. She is a Siberian Husky so the crate thing is out of the question. A crate big enough for her would take up too much space. Thanks for your suggestion though.