Dear James: My neighbor’s security lights shine in and are annoying. Would louvered shutters or miniblinds be most effective? What size and on which windows would be best?—Alan R.
Dear Alan: Nighttime light pollution is definitely a problem—and not just for neighbors. It has a negative effect on wildlife and their natural behavior. Highly directional security lighting is available to minimize this problem. Older floodlights can be fitted with shields to reduce the amount of annoying stray light.