I've not used an attachment on my mattress. but used it on my carpet n it worked great. Andrew Halse you must have not put the attachment on right as I use mine all the time n I've not burnt myself yet. I love mine.
I have never used it for this, I was very dissapointed with this product and used it only once, I found the steam preasure to be very poor, and it lasted about 5 mins, I have no intention of waiting for it to cool down before I can get anothet 5 mins use,its in the bin.