These things are not for "lightning hitting your home". It is mostly for lightning hitting somewhere near by.
The best lightning or surge protection is a layered plan. You start with a good grounding electrode system, connected to a panel protector and the protrectors in the Dmark of your utilities (phone and cable). Then you back this up with the point of use protection to deal with transients induced into your wiring beyond the entry points. Between the two you end up with a fairly robust protection scheme. Bear in mind, most times the damage is caused by the differences between the cable/phone and power line, with that difference being reconciled through your equipment. That is why it is important that any protection provides a path to clamp these differences before they get to the equipment
