Your dog/puppy must still be in the teething stage. I DON'T miss that age!
Our dog has gone through a couple of leashes when he was smaller from tugging and chewing as well as numerous collars. THOSE were usually OUR fault though.
We're on our 2nd Brad collar!
Here's a suggestion for your time outs.
You can buy a style of leash that looks more like just the handle part with about 1' of "leash" attached to it. It is usually stiffer and yes, made of nylon. It's very strong. There's a special name for it, but I can't remember.
We used to attach it to the top of a of post that was about as high as my thigh, but I'm sure you could find a place to attach it to.Maybe like at the end of a banister?
The idea is, you leave that "leash" attached in a certain place, and you BRING your dog to it to place him in his time out.
We used the post in out house that was at the end of a railing/divider in our kitchen.
This style of leash we used, kept our dog in a SIT position only because there was no extra leash length to chew on.
To get a picture in your head: picture the dog sitting and the leash attached to his/her collar. The leash is extended upwards and the handle end it attached to whatever you chose.
That way the dog cannot relax enough to lay down. The point is, the time out is a little bit of an uncomfortable place to be and he/she doesn't want to ge there.
This way you won't go through as many leashes until he gets throught he chewing phase.
