Especially if you have young children in your home, window guards and stops are must-haves. Each year, more than 4,000 children are treated in the ER for injuries received from falling from a window, according to the U.S. Consumer Product Safety Commission (CPSC). Screwing into the frame of your windows, these guards are easy to install and budget-friendly (you can pick them up at Home Depot). If you don't want to install guards, window stops allow you to prevent window from opening more than four inches. And screens won't cut it! With enough force, a child can pop them out.