RaiseLittles
2 Under 2 · Quick Answer

I've Already Childproofed — Can My Toddler Still Help the Baby Get Into Something Dangerous?

Yes — and it's a real, specific risk that's different from "one toddler alone in a babyproofed room," not just the same hazards doubled.

In this answer
  1. Why two kids are a different risk than one
  2. Equipment doesn't replace watching
  3. What to actually do about it
  4. The bottom line

Our full guide to triage, safety, and the "Yes Space" covers the standard childproofing checklist — gates, outlet covers, anchored furniture, and the door-pinching hazard specifically. This answer is about a risk that checklist doesn't cover on its own.

1Why Two Kids Together Change the Math

The American Academy of Pediatrics/HealthyChildren.org's childproofing guidance for two young children close in age (written for twins, but the physical dynamic is the same with a toddler and a crawling or climbing baby) is direct about this: two children together "may encourage each other to misbehave", and — more specifically — one child can help the other reach an area that neither could get to alone. A toddler pushing a step stool or ottoman somewhere, climbing up first and then pulling a baby up after them, or simply holding a door or drawer open that a baby couldn't open solo, isn't misbehavior in the usual sense — it's two different skill sets combining into one new hazard.

2Equipment Doesn't Replace Watching

This is the part worth sitting with: the same source is explicit that childproofing equipment on its own "does not replace direct supervision," and that relying on it can create a false sense of security. A gate, a cover, or an anchor stops a single predictable action — it doesn't account for two kids improvising together in a way neither parent planned for. That's also exactly why the foam door guard failed to stop the two-kids-pushing-on-opposite-sides hazard already covered in our main guide: a gadget built for one kind of use didn't anticipate two kids using the door as a game.

3What to Actually Do About It

The practical takeaway isn't to add more gadgets — it's to treat your "Yes Space" as somewhere you check in on periodically even when it's working, rather than a room you can fully walk away from the moment it's set up. When your toddler is mobile enough to move furniture, open things, or boost themselves (and soon, to boost a sibling), that's the point to re-walk the space with fresh eyes — the same way you'd reassess babyproofing as any one child gets more capable, just now accounting for what two of them can do as a team.

The bottom lineTwo kids can reach, open, or climb to places neither could alone — AAP/HealthyChildren.org names this directly, alongside the reminder that gates and covers don't replace actually watching them. Treat your childproofed space as something to periodically re-check as your toddler gets more capable, not a one-time setup you can trust completely.

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When Both Kids Need You at OnceTriage, safety, and the "Yes Space"2 Under 2: The Complete GuideTriage, feeding, naps, and outings
Sources
American Academy of Pediatrics / HealthyChildren.org — "Twinproofing" (written for twins; the physical-safety dynamic generalizes to any two young children in the house, as noted in our main guide)