Comments about KidCo Electrical Outlet Covers, 3 ea:
We purchased these after trying several other types and found these to be the best option. The only downsides are that you need a few minutes for each outlet to change the covers, and one tab out of the entire house got temporarily stuck open, but I just closed it with a flip of my finger. No biggie, but that's why it's not five stars. Definitely get these instead. You'll be keeping them for about 5-7 years, so it's worth it... and good too if you decide to sell your place to a family I guess!