Because the criminals, will soon be released one day,
and that can effect them in the longrun, which can lead to them being Sued by the "Criminals".

reece97 wrote instead of testing products on animals why not test them on prisoners who have commited murder and stuff and deserve to be tested on , just a thought , and no trolls please because no one really likes you.

I've heard people say this way too many times and has probably been debated on. I agree but there is some exceptions in my view.

that's very inhumane and would give the US, or whatever country your from, a bad rep.

Nah not just "Prisoners"
I'd say the only people who would deserve that are was-criminals, torturers, and prisoners on death row.
IF the person has say killed 13 people then do all you want to him, but if its someone who stole a mars-bar tjey dont really deserve it.

I won't lie, this is a good a bad idea.

Good: They've committed terrible crimes, and deserve to be punished.

Bad: It's inhumane in many more way's, and let's leave the torture to war.

Survival of the Fittest...
Animals are being tested on because We are better than them, and easier than killing our own kind...

Sounds Like A Great Idea!

I think its a brill idea

But the government would go crazy and do it on people have just done grand theft auto or normal stealing

But yeah, if you kill, you deserve to be tested on, the more severe the slaughter the more tests