Possums can be a threat to the safety and cleanliness of your home or office building. They enter the house, dirty it with their dropping and make the building unlivable. As they are territorial creatures, the stench of their urine and droppings is highly-unbearable. Moreover, as they are a protected species, you cannot harm them. So, to take care of possums that enter your house, you need a registered pest control expert like Earth Termite and Pest Control.