The sun maybe????????????????????????
He found a can of a medicine that kills different types of bugs and parasites. Candy tells him the man who stayed in his bunk before was very clean and probably has a can as a precaution.
Answer: He is not sane... He killed a man only because his eye bothered him. Then he hid him under the floorboards. The only way he could possibly be sane is because he confessed to the police when he could've gotten away. He did the right thing in the end but I would still consider him insane.
Explanation:
