Use your product section properly

A product section should not be used as an e-commerce site, as the existence of GMB has made it far less common for people to actually search and visit your site directly. Instead, use your product listing as a link to your site from the GMB. Combine the link with advertisements and information about the product, and from there you can give GMB the contextual information it needs. This can vary from price of the product, availability, information, description and name. 

Use this information as a call to action for the GMB. Use photos and links to give the GMB as much information to collect as possible. That way it will know exactly how to categorize and locate your product. This may lower direct traffic to your website, but GMB provides a far better exposure to your product than relying on potential customers finding your content through a Google search.