Cant elimintated these Index Scan
When tuning your query look at the Top Operations tab to find the highest cost operator, in this case, it is an Index Seek on the [saAdmin].[dbo].[Products.By.Site].[idx_pbs_SiteID].(NonClustered). The next highest costs are for the Hash Match (Inner Joins). Then look for the largest pipe, both the number of records and the size of the data. Look for ways to decrease the size of the perspective pipe.
Since you have provided an estimated plan, it is hard to provide direction on the further tuning of the query.