T-SQL trim (and other non-alphanumeric characters)

Question

We have some input data that sometimes appears with   characters on the end.

The data comes in from the source system as varchar() and our attempts to cast a

Answer 1

How is the table being populated? While it is possible to scrub this in sql a better approach would be to change the column type to int and scrub the data before it's loaded into the database (SSIS). Is this an option?