Deer, rabbit, ect - Carnavoir urine and/or poo.(i.e. dog), human urine will work to but not as long(just pee in a cup with perlite/dirt)
Snakes - What the fuck lol. I'm pretty sure they don't eat plants.
Humans - Stake these around your plot:mrgreen:
TRESSPASERS WILL BE SHOT, SURVIVORS WILL...