How long does it take for a Sim to die from hunger?

How long does it take for a Sim to die from hunger? In particular, I mean on The Sims 2 (TS2) for consoles. Does it differ from controllable Sim to visiting NPC?

I want to kill visitors, but they don't seem to die from food poisoning, so I turn to starvation, by trapping them in sleep in a bed by blocking the exits. They can't die in their sleep; I must let them escape the bed to die from starvation, but if I release them too early, they will simply leave. If they return, they won't be starving anymore. I can't see a visitor's Motives like I can with my controllable Sims who live on the lot, so I know the safe amount of time to keep them trapped until I know that they are guaranteed to die from starvation when they awake.

Solution 1:

I'm not really sure on this but I know that more activity reduces their stat bars quicker. Here is a duplicate question on yahoo answers but I don't think it's exactly what you are as it cheats to make them a household member.

Must you starve them? I always found the best way was to make a swimming pool and remove the ladder or else place fireworks spuriously around your house(once you don't mind it burning down that is)!

Solution 2:

Since there is no way to see their traits to see if they are actually hungry. I'd leave em in that bed for as long as possible (weeks in game even) just to be sure.

something I always did was bring them to a secluded "shed" with a firework in the center and rugs all around.