Best practice for XML sitemap depth

[TTS_Group]

We run an eCommerce for education products with 20 or so subject based catalogues (Maths, Literacy etc) and each catalogue having numerous ranges (Counting, Maths Games etc) then products within those. We carry approximately 15,000 products.

My question is around the sitemap we submit - nightly - and it's depth. It is currently set to cover off home, catalogues and ranges plus all static content (about us etc). Should we be submitting sitemaps to include product pages as well? Does it matter or would it not make much difference in terms of search.

Thanks in advance.

[Audiohype]

I would add in the products also. The sitemap's there to help the search engines crawl your site - the products are the pages you want to be indexed for sure.

[SanketPatel]

Site-map is very important for telling Google about our pages,  Using site-maps has many benefits, not only easier navigation but we can get better visibility by search engines. You can submit around 35000 pages in your site-map.  It is only way that you can immediate say to search engine about any changes in your site. Your question is about including product pages in site-map right? so ya, you can submit your product pages in site-map, if you are adding your product pages search engine will recognize your pages,  so it will increase your site visibility and visitors.