Legally, it can be understood as follows: first, thieves break into residents' homes illegally, and thieves enter houses to carry out theft crimes; Residents' homes are citizens' private areas, and citizens have the right to set up organs in their own homes that think that property is illegally infringed, such as setting toxic food bait in their homes to prevent mice from biting property, so as to poison mice, and they don't know when thieves will deliberately break into houses.

The second is that the thief ate the rat poison of the victim's house when he broke into the house, and died after returning home because of the toxic attack of rat poison. So how to calculate this responsibility? When the thief broke into a private house illegally, he stole the bait from the victim's house and died of poisoning after returning home. The victim of this rat poison did not know in advance when the thief would come, nor did he know whether the thief would come or not, and he did not know the tool deliberately set to poison the thief in order to prevent the thief, so the victim neither violated the law nor assumed any legal responsibility; The thief's death can only be said to be his own, and no one can blame him.

Thirdly, in this case, the victim didn't know in advance that the thief had taken rat poison when he broke into the house, and he didn't meet the thief at the scene of the theft and had face-to-face language communication and physical contact. The thief didn't know about it until his family came to the door. Although the thief is dead, he is responsible, including legal responsibility.

As far as burglary is concerned, it is illegal in itself. In any illegal act, the parties have certain responsibilities to bear the risks brought by illegal acts. For example, a thief jumps over the wall and enters someone's house, and then he has to take the risk of falling off the courtyard wall or being bitten by the owner's dog. Even if sometimes, for example, the owner pulls the power grid on the courtyard wall privately, he does have to bear part of the responsibility. But because the thief is engaged in illegal behavior, he can't be excused just because the thief is dead.

Then, let's look at the cause of death of the thief in this case. We can notice that in this case, the thief died entirely because of his "greed". Because as far as Xiao Wang puts rat poison in cakes, his home belongs to private space, and putting rat poison will not be suspected of endangering public safety. This is a legal and compliant civil act.

Of course, because we are in the private area of our home, let alone write a message "Hair cake is poisonous" next to the hair cake with rat poison. After all, no one wants to poison thieves in this way, and of course, we don't want thieves at home. To put it bluntly, if the family eats it carelessly, they can only blame themselves. The thief ate it himself, not because the owner forced him to eat it, but because he deserved it. This responsibility can only be borne by himself.

However, the thieves' family did something that did not pay off well. These don't need the police to solve the case, they came to us themselves. All they need to do is carry the body away and leave the stolen things behind. For one thing, you are not weak; for another, you are unreasonable. If you make trouble, you should arrest the whole family.