Yes, tamper-resistant outlets are designed to be safe for use in homes with children. They feature a spring-loaded shutter that blocks the electrical slots when not in use, which helps protect children from electric shock if they try to insert an object. While they are the safest option available and highly effective, it's important to note that few things are truly 'childproof.' Children may still try to imitate adults by inserting a plug. For this reason, it's best to use tamper-resistant outlets over less effective solutions like plastic covers, which can be removed or pose a choking hazard. Always supervise young children around any electrical outlets or devices.

In many cases, you can DIY home childproofing with success. You can purchase childproofing tools like cabinet locks, outlet covers, and table-edge guards and install them easily. 

However, it's best to have a professional childproofing service work on larger projects like pool safety or furniture anchoring. These safety measures can take a lot of time and effort to DIY, plus, you want to ensure the tasks are done correctly to keep your child safe.

The average cost of childproofing services is $410. This cost can range from $190 to $630 or more, depending on the size of your home and what services you need. 

The location of the childproofing additions also plays a vital role in the overall cost. For example, a bathroom is relatively small and costs about $150 to fully childproof. However, if you have a swimming pool, you could spend as much as $1,500 to $10,000 to make it entirely safe for small children, including adding a pool fence.

Many parents, especially first-time parents, agree that professional childproofing is worth it. These professional childproofing services are trained to recognize dangerous home situations that many people would overlook until it's too late. Furthermore, professional childproofing experts have access to top-of-the-line equipment you can't purchase at most stores, providing longevity and peace of mind.