Reinforce Your Entry Door Strike Plate
To install, remove the old strike plate, then hold the new one in place and deeply score around it. Chisel out space for the new plate, then mount it by driving 3-in. screws through predrilled holes.
Secure Patio Doors
Andersen Corp.'s auxiliary foot lock (andersenwindows.com) fastens along the bottom of the door and has a bolt that fits into a grommet to hold the door secure. A similar lock, the Door Guardian (thedoorguardian.com) attaches at the top of the door. Both locks allow the door to open 3 in. without compromising security. Installation takes about 10 minutes. Screw the bracket containing the pin to the door, then drill holes and insert grommets in the track for the pin to slide into.
Add Inexpensive Door and Window Alarms
Attach the alarm to the door or window (with a screw or double-sided tape) alongside the magnetic contact strip (they don't have to be touching, but within 1/2 in.). When the door or window opens, breaking magnetic contact, the alarm shrieks (these little units have a piercing alarm). The door alarm has a delay feature, giving you time to set the alarm and leave, then open the door and deactivate the unit when you come home, without setting it off. The window unit has an on/off switch. The alarms will work on any door or window, and the batteries last two to three years.