Not recommended due to open disregard for the basic rights and physical safety of its residents as shown by this article: http://townhall.com/tipsheet/christinerousselle/2015/09/03/maine-man-who-shot-intruder-robbing-him-told-to-give-up-his-gun-n2047603 It is clear that this landlord would rather have his tenants assaulted in their own residences than have them defend themselves with reasonable and necessary force as permitted by the laws of Maine, and indeed every other state in the Union.
It is also to be noted that a home invader was able to enter the man's residence, which suggests poor security unless the man was careless and left his door unlocked.