This was a great starter kit. I like how the cabnet locks were hidden, but I can see how someone may not want to drill into their cabinets. There is also a newer version of the cabinet locks that the locking part comes off, but the mounting stays on the cabinet, so if you don't want it locked all the time, you can take it of without taking the screws out. The door handle locks are great.
The ones for the door handles work awesome but my kids can still pull out the ones that go over the outlets. As far as the ones that go in the cabinets, you will need a drill..they became loose after a year so you will need to check them every once in a long while.
We didn't like the cupboard locks, they don't work well with any of our cupboard doors. They didn't catch, our toddler with very little strength could pull the doors open, my husband even reinstalled them to see if it would catch better and it didn't.
The doornobs are a nice concept as well except they're not the easiest to use even for adults. It's not a natural way to open a door!
The plug covers aren't that easy to use either compared to the standard plug covers.