Mortien Rat kill contains mainly brodifacoum which is not harm for human beings very much. but continuously exposing them will lead to serious damages. so it's better to give him/her Vitamin K,C contains antidotes. infact Mortien Rat kill contains only 0.27—0.30 mg/kg BW*5 of brodifacoum . it's small amount compare with the body weight
but remember if he/she is a child immediately treat by going to a nearest hospital.