Ghosts (Poltergeist) in its modern definition are now associated with physical paranormal activity inside homes such as mysterious disturbances, moving of objects etc. The most common type of examples being moving or throwing of small or large furniture, loud noises or shrieks, rain of objects from around the house, odours of which the source cannot be detected etc. They have been known to have caused interference in telephones and electronic equipment, and appliances and lights on and off. They may even become full bodied or half bodied apparition. Hence, it is better to stay away from such entities that are disturbing humans. Clearly, they can be extremely dangerous. Ghosts can also cause harm to humans as they are not at peace. For instance, if we trouble them they are also going to do the same in return. Some people also call ghosts deliberately either for the fun of it or to study them better. Therefore, human beings have no right to disturb those at rest whether they exist or not. Ghostly experiences usually have an adverse effect on people. In fact, some even go crazy to the extent that they kill people around them, thinking that they are out to get them. There have been many cases of people who commit suicide or get into drugs. Some people deliberately call ghosts using the Ouija board also called planchette. An Ouija board can be a simple piece of paper or a delicate wooden plank with alphabets and numbers written on it. This is used to call ghosts or spirits by a group of people where they all sit around it and try to get in contact with spirits. There is a very low success rate to this. Aside from that, this can also be extremely dangerous and can lead to harmful effects. Sometimes after a successful session when one tries to send the spirit back, it just does not leave and behaves stubborn. Thus, this can be extremely dangerous for people performing this practice. Spirits sometimes do not leave the place at all, just stay there and maybe also harm people. Such practices can disturb everything around you sometimes. Therefore, it is better to stay away from such practices and not perform them as this is taking away the peace of the spirits who are at rest. The debate on the existence of such practices still has not come to a conclusion so far. However, there is a belief that this practice does actually exist. This does prove to some extent that ghosts do exist because some findings actually prove their presence using devices like EVP’s. The existence of these happenings and bodies are even being studied using scientific technology.