It's a good idea to start installing child locks around the home as soon as a baby starts crawling or walking, which is typically around 6-12 months of age. At this stage, babies are becoming more mobile and curious and can start to explore their surroundings. Installing child locks and other safety measures before your baby becomes mobile can help prevent accidents before they happen.
It's also important to note that children grow quickly and what may be safe for them one month may not be the next. It's a good idea to regularly check and update the safety measures in your home as your child grows and their abilities change.
It's important to remember that child locks and other safety measures are not a substitute for adult supervision, and it's important to keep an eye on children at all times to ensure their safety.