How?

[Mik]

Determination. Lower the mattress.

[Axtremus]

Put him in a cage where he is enclosed on all six sides, not just five like a crib.

[LuFins Dad]

@mik said in How?:

Determination. Lower the mattress.

It is at the lowest level…

[Catseye3]

https://thepostpartumparty.com/toddler-climbing-out-of-crib/

https://www.todaysparent.com/toddler/toddler-behaviour/is-your-toddler-climbing-out-of-his-crib/

https://www.healthline.com/health/childrens-health/toddler-climbing-out-of-crib#causes

[Axtremus]

Build the walls fences higher!

[Jolly]

How old is the lad?

[Copper]

Barbed wire

[Jolly]

@copper said in How?:

Barbed wire

That's sooo 19th century! Try something more modern:

https://www.lowes.com/pd/Zareba-Systems-2-Mile-AC-Powered-Electric-Fence-Charger/1002886714

[89th]

Do you hear a THUD when he lands on the ground? I'm sure he's just pulling himself up and using his legs to push off of the vertical slats until he gets a foot over.

[Catseye3]

What 89th said. See Youtube for shows about babies climbing out of cribs. With the added piquancy of videographers aiming rock-steady vidcams at the babies as they risk life and limb going over the side.

Agile little moneys, they are.

[LuFins Dad]

@jolly said in How?:

How old is the lad?

21 months