You should consider where your going to put it and what your going to do if you succeeded. And whats going to go on the trap to catch whatever it is your trying to catch
Marissa trashed the doughnuts because they were totally gross: very informal.
Marissa threw the doughnuts in the trash can because she knew they had exceeded their expiration date: informal.
Marissa understood the hazards of eating expired doughnuts, and with very little hesitation she deposited the aforementioned eatables into the garbage receptacle: formal.