Go to the local feed and grain store and pick yourself up a nice $20.00 pair of stall mucking rubbers. If the cold is not an issue they do a great job at a great price.
I do however really like my Browning rubbers with 1200 grams of thinsulate but they are bulky and big, but they are warm..

Always search the bargain barn at Cabelas. Sometimes they really do have some good deals..