Do Daz 3D Models work in GMod?

I’m thinking about getting this free-to-download 3D art program called Daz 3D, but I wanna know if you can port the models made in it to Garry’s Mod.

Only if you convert the models to work in the source engine.

Ooh. How might that be done?

Well that depends on what formats Daz can export to, generally there’s lots of X to .smd converters out there.