How to get hold of rid of cankerworms? oh my god they are so disgusting! my city is completely overrun...

oh my god they are so disgusting! my city is completely overrun with cankerworms! I was wondering, does anyone hold any ways to get rid of them without calling an exterminator?? close to home remidies, or whatever? seriously, if someone can tell me a route to get rid of them, i will be SO happy!
Answers:    I hear on the news yesterday that Winnipeg was starting spraying for them yesterday evening.

Here's a site.

http://winnipeg.ca/cms/bugline/cankerwor...
Kill them