I am not a legal expert, but I can provide some general information on this topic. The laws regarding police officers entering private property can vary depending on the jurisdiction and the circumstances involved. In many cases, police officers are allowed to enter private property if they have a valid search warrant, if they have obtained the consent of the property owner, or if there are exigent circumstances that require immediate action, such as the need to prevent injury or protect public safety.
If a complaint has been made about a specific situation, such as a dirt bike causing a disturbance or violating local ordinances, the police may have the authority to investigate the complaint and take appropriate action. However, whether they can enter private property and remove the dirt bike without a warrant or consent would depend on the specific laws and regulations of the jurisdiction where the incident occurs.
It's important to consult local laws and seek advice from a legal professional or law enforcement authority in your specific area to get accurate information about the rights and limitations of police officers when it comes to entering private property and taking action based on complaints.