We cannot answer that question for you. You are definitely not required, however, if your state requires a termite letter at the time of closing, only professional companies can issue these letters and if you do not have an active contract with a company you will usually be forced to pay a large sum to have your house treated to get a clearance letter. You should call your state Department of Agriculture which is usually the department that manages pest control companies and ask if your state is one that requires a termite closing letter when selling a house.
You should perform a liquid termite treatment in the ground to get the termites where they are entering your house. To perform a treatment just as a professional company would do, please read our How To Do A Termite Treatment Article which explains exactly how you should treat your home properly. Doing a treatment like what is described in the article will not only take care of existing termites that you have, but it will also protect and prevent future termites from entering for about 7 years.
Here is a a link to the article: http://www.domyownpestcontrol.com/termite-treatment-c-3_352.htmlYou should perform a liquid termite treatment in the ground to get the termites where they are entering your house. To perform a treatment just as a professional company would do, please read our How To Do A Termite Treatment Article which explains exactly how you should treat your home properly. Doing a treatment like what is described in the article will not only take care of existing termites that you have, but it will also protect and prevent future termites from entering for about 7 years.
Here is a link to the article: http://www.domyownpestcontrol.com/termite-treatment-c-3_352.html
Please let me know if you have any further questions.
Both would need to be done. You should perform a trench and treat around the perimeter of the screened porch, but you also need to be concerned about the seam where the porch is attached to the house….where the beam is that you described. Any time you have an “add on” to the house, in this case the screen porch, it is possible for termites to enter between the porch and the house. Therefore, you should drill along that seam and treat with a termiticide along the house foundation as well as around the perimeter.