For those folks wanting an easy and inexpensive way to keep drawers and cabinet doors closed, I'll share a method I discovered a few years ago, passed along to me by a woodworker bud.
Buy these
Neodymium magnets. The way I install them is to drill a hole the size of the magnets and epoxy them in place. Two magnets facing each other (remember to observe polarity!) are very strong, easily hold a cabinet door shut. If you have a super-heavy drawer, you may need a pair on each side of the drawer front. If you don't like seeing them when the door or drawer is open, drill just a bit deeper and apply wood filler or veneer over the magnet, it barely effects the holding power.
I've started using these magnets for a few different applications. They work great, also, for adding a wood panel onto a metal case, for instance. The N52 magnets are more attractive but for small stuff, lesser grades of neodymium will work too.