Dog Training

I work from home and a few months ago someone tried to break into our house while I was working. We've been going back and forth about sending out dog off for some training ( about $3,000 ) and since my business is ran from our house I was curious if she could be considered a guard dog and if the training would be able to be a write off? Obviously the training would have elements geared towards deterring any intruder. 

Thoughts? Am I crazy for thinking about this?