If you have cleaning supplies, plant food, etc in a cabinet and want to make sure the kids stay out of these the Tot Loc by Safety 1st is the lock to use. It operates magneticly. You place the magnetic "key" to deactivates the lock. We first tried the flexible locks which worked great until the kids figured out how to open them & break the plastic. Now that my kids are 3 they are fine with most cabinets but I wanted to make sure they stayed out of the chemical cabinets. Also I recommend that you get a "Key" for each lock so you can keep it near by when needed. Also they Safety 1st directs you to some stores to buy but you can get them almost anywhere online.