What is this double-serrated knife good for? I was recently given an unused knife from an elderly relative who downsized her home. It is stainless steel with a sort of "double serrated" edge. 




Out of curiosity I gave it a try and it more "shredded" than cut my meat and almost destroyed my plastic cutting board. It is also a pain in the proverbial to clean because food particles cling to the tiny spikes and it catches on the cloth and towel.

I don't really need it - my kitchen is fully equipped for my needs - but before I delegate it to "garden duty" (makes a good impromptu saw), I'm asking for your input:
Am I missing something here? Does it have a special use or advantage I just don't see?
You are not missing anything, that is a cheap serrated "no sharpening" knife from a set. The only possible advantage to it would be when cutting soft tomatoes, where having a bit of serration helps. For that I use a bread knife anyway, so I'd say you have no use for that knife at all in the kitchen.