I bought the Throw EB this morning at…
…and got the answer recommended by the Mfr. It might surprise you:
"# Soft Comfortable Fleece
* Easy care fabric**
* Machine wash and dry"
**
You just unplug 'em and throw them in the washer. I think you can even machine dry them, but read the label.
All electrical resistance heaters (including your electric blanket,baseboard heater, and toaster oven) are 100% efficient at converting electricity to heat*
However, your baseboard heater has to heat up the entire room in order for you to feel anything, while the electric blanket only has to heat up a thin layer of fabric.
Obviously, using the electric blanket is going to be lighter on the pocketbook, if you’re only concerned about personal heating.
*if this doesn’t make sense to you initially, ask yourself, what form of energy would the “waste” portion be made up of if the process WASN’T 100% efficient?
The downside is awakening and putting your feet on the floor - unless, perhaps you keep your “wicked good” slippers under the covers, too! (You might want to get new ones, though.)
What I do is program the thermostat really low in the winter at night, but half an hour before the alarm clock rings it turns on and warms the place up. It helps me wake up, and I’d never be able to get out of bed otherwise.
This is a little late for the OP, but a concern to some people is the electromagentic fields from an electric blanket and their potential effect on the body. Cecil addressed it here, although the article is more about power lines than electric blankets.
Thanks, TroutMan. Not at all late, in my mind.
Odd. I keep my slippers on the floor next to the bed. I never have trouble finding them, even in the middle of the night. Where do you keep your slippers?
Same as you,. 
You keep your slippers on the floor next to Exapno’s bed, too?
Lol!!!
I haven’t been killed by electric blankets, but I’ve been shocked by two.
There’s usually a cover. You’re supposed to wash the cover, not the actual wired parts.
Maybe they’re different in Europe - here the wires are an integral part of the blanket, but you can wash the whole thing (well, not the cord - you take that off.)
Apropos of nothing, when I was 4 my parents’ bed was set on fire by an electric blanket. My dad dragged the mattress outside while my mom called the fire department. Being four, all I remember is my dad poking the smoldering mattress with a stick, causing flames to erupt higher than the roof of our house while my mom screamed at him to stop, and the overwhelming thrill of actual firemen! at my house! I wanted so badly to talk to them and ask them if I could help them but my mom wouldn’t let me.
They had been given the electric blanket as a wedding present 10 years before, and had never opened it. It had sat in a closet until that night, when for some reason they decided to pull it out and use it.
So…did your parents have any secret enemies, a friend or relative who seemed strangely disappointed when they survived their first winter after the wedding? Some electricity-age Nessus, gifting them with an object meant to kill?! Did any of your aunts or uncles ask them every year, “So, did you use that electric blanket we gave you yet? Gonna be a cold snap tonight, weatherman says…”
Probably not, but it would make a great story! Not that the one you actually posted isn’t!
I loves my electric mattress pad. I don’t have any issues with feeling the wires, although I have it under another fairly fluffy mattress pad. I love turning it on when I get home at night, then by the time I’m ready for bed, it’s toasty warm inside. I hate crawling into cold sheets in the winter. It has a built in timer that goes off in 10 hours, so I don’t have to worry about leaving it on all day either. I’ve had electric blankets before too, and much prefer the mattress pad.