Dr. Grant said that is a very bad idea.
Read more Paul Kirby QuotesFrom: Jurassic Park III (2001)
Erik : Be careful with that. T-Rex. It scares some of the smaller ones away but attracts one really big one with the fin.Dr. Grant : This is T-Rex pee?Dr. Grant : How'd you get it?Erik : You don't wanna know.
Either way... you probably won't get off this island alive.
On this island there is no such thing as safe.