childproof
There are plenty of products on the market that can help you with childproofing.
Our 2-year-old twins were crawling up the stairs and trying to scale the banisters and we didn't know anyone who did childproofing.
He normally charges from $700 to $1,500 or more for what he calls full childproofing - locks, latches, stair gates, Plexiglas barriers and more.
Parents install stair gates, cupboard locks, plug socket covers and other child-proofing devices.

SMART Vocabulary: related words and phrases

Children & babies
ankle-biter
arrival
babe
babe in arms
baby
comfort blanket
crawler
designer baby
devil
diddums
neonate
new addition
nipper
only child
oops-a-daisy
teethe
tiddler
tike
toddler
toilet-trained

You can also find related words, phrases, and synonyms in the topics:

Safe & enclosed spaces
Defending and protecting