I wash the sheets in warm water with a medium setting. It tends to get most of the stains out but a few blankets are stained for life...lol... But I really don't care as long as they are washed.
I try to shake out as much hair as possible outside before I put them in the washing machine to help with the clean-up. I can usually wash 3 light weight sheets in one load. And then I have those hoodies/slinkies...whatever people call them and I make sure it is velcroed togther and I wash those too.
The bigger blankets don't work in an agitating washing cause it just doesnt have room to move anywhere (yes I have tried it...lol). I I will either hang them and spray and scrub them or bring them to the laundry mat and use the extra large washers.... but I don't use the heavy blankets very much, just in the fall and spring to help with the show coats, but they get to grow their fuzzies in the winter...lol.
I have a number of blankets so I use till have no clean ones left, so that's how I have been able to sneak them to clean them but since the show I have them in the bed of my truck and my BF wont be gone for a long enough period of time for me to sneak them in.
Maybe just do it and ask for forgiveness later?...lol I've never ruined a blanket in the wash, my horses tend to do the damage on them, then I send them to mom for mending...lol