Long ago, I had a friend who served in the Falklands war as a demolitions expert. He kept a few souvenirs, and had a few problems. One of the problems was that he couldn't sleep in houses, he could only sleep outdoors. One of the souvenirs was a claymore mine. His parents asked him to housesit for them while they went on holiday, so he wired up the claymore mine to their front door and slept in the garden. This appeared to him to be a perfectly rational response to the situation.

My point is that a claymore mine _can_ be used for home security. The fact that it would destroy the house that it was securing doesn't contradict this.