Dead bolt locks that extend into the door jam are best. Keep shrubbery trimmed away from windows and doors. Overgrown plants may aid burglars by concealing entrances to the house. Do not hide a key outside the home. If a spare key is needed, leave it with a trusted neighbor or friend.
Burglars know to look under doormats, above door frames and around flower pots for spare keys.
So when leaving home during the holidays, even for just a few hours, to protect against burglars, leave the home looking as lived in as possible and always lock all entrances. Recommendations on this web site do not endorse any commercial products or trade names.