Question
How can we get rid of Beavers and/or Muskrats?
They are damming up our stream and causing to much water back-up in our yard!

Answer
I will answer the beaver question as muskrats don't "dam" streams.

Trapping

Trapping, if legal in your state, is an excellent way to control and stop beaver damage. Learn how to trap them by visiting http://icwdm.org/handbook/rodents/beavers.asp    You can also contact your state抯 division of fisheries and wildlife and they may be able to give you a list of fur trappers who may be willing to trap for free during the fur season which is typically November-February (depending where you live).  Unfortunately, the citizens of some states like Massachusetts, Colorado, and Washington decided they didn抰 like fur trappers so they imposed trapping restrictions, in some cases severe ones. So don抰 be surprised if you live in one of those states that you will have to pay to have the problem resolved, just thank your fellow citizens and the animal rights protest industry for the bill.

Trapping beaver isn抰 hard but it does require attention to detail as mistakes will quickly educate your beaver making them very hard to catch. I would suggest asking your state about trapper training. Otherwise, ask me.

Shooting is also a possibility provided it is legal and safe. Again information can be found above.

Repellents,

Don抰 waste your time with repellents unless you are dying to spend money for nothing. There is no evidence they work after the beaver are established.

Flood Control
Sometimes, the problem really isn抰 the beaver it is the flooding. In this case, you may want to consider the use of flood control devices. These allow the beaver to remain while still controlling the flooding, thereby being a win/win/win.  The beaver remain, the flooding is controlled, and valuable wetlands remain.  This technique isn抰 suitable for every area and you will need state permission. Visit http://icwdm.org/wildlife/beavers.asp for links to those publications.

Disclaimer: As with any activity, remember that animal damage control comes with its own risks and problems which can include but are not limited to legalities, health threats, and personal liabilities. Be sure to follow all state laws governing wildlife and make sure you have a thorough understanding on how to resolve the animal damage complaint. My advice is only as good as your understanding of me and my understanding of your situation. If you have any questions be sure to write back.