I will have to disagree with the last answer. Whether they work or not depends on the vegetation. I don't care for the reverse curl systems because of their tendency to overshoot during heavy rains. ... read more
Verify that all window and door seals/weatherstriping is in good shape.
Check to be sure doors and windows are caulked properly (no gaps, cracks or missing).
If you have an attic access, treat it like ... read more