You should not direct all the prospects to the home page unless you have a single page home page selling your only product. They will not bother to search or locate the exact page where they will get what they are looking for. Take them direct to the main selling page for the product in question.
I have done this for a tea merchant whose website I manage. A click on any ad for the Darjeeling tea will take you directly to the page talking about Darjeeling tea, while a click on any ad related to the Assam tea will take you to the Assam tea page. This improves the stay-on-site time of the visitor and you can get more orders or enquiries.