weird characters showing up in html

I have a project that gets input from an xml file that we extract information from select nodes.

One of the does we take the info and just output in a <pre> tag since it's already formated from source.

We started seeing all these B's in the output so I ran a loop through all the characters and display the ascii value to see what it is and this is what I get in return.

How I get value:
Result for the character in question:
В (-15712)

Any ideas how I can strip these out?

Thanks.