My dog peed on our new memory foam mattress. How can I remove the stain?

Yes you can. Though memory foam mattresses are temperature sensitive and absorb temperature from the climate, but still it is perfectly fine to use an electric blanket with a memory foam mattress. For more on how to use an electric blanket with a memory foam mattress, you can read this article
http://www.ehow.com/how_5768635_use-electric-blanket-memory-foam.html

Jack

I found you a great article with a few ways to try. Good luck!

http://tipnut.com/how-to-clean-bedwetting-stains-from-mattresses/