The previous owner of my house grew a citrus tree less than 1 foot away from the house. I don't know the exact species of this tree, but it produces orange-colored tangerine-sized fruits that are sour. It is about 8 feet tall now. I'm worried that the roots will continue growing and damage the foundation of my house or rupture water pipes. What do you suggest me do with this tree? Kill it? If so, how? With pesticide or with a chainsaw?