Avast antivirus not only kills the viruses but it also update the users system against the latest viruses and notify the users for updating. Avast antivirus is primarily used for removal of worms, viruses, Trojans, spyware as well as detection and removal of root kits. The Avast antivirus Software is among leading and trustable software. For any kind of problems while using Avast software, you can contact Avast Customer Service Number 1-800-987-6301 that can provide you with some instant solutions to your problems.