Blindfolds for immobilizing?

I had seen a couple of different forumistes  mention recently they do set blind-folds on their semiferales before bath or other touchy maneuvres. And voilá, they get totally passive.... Even better than wrapped up in a towel.

These blindfolds must surely be much useful in many of our situations.

Please, tell, how are you doing this?    The practical details, I mean.

Please also, tell about your experiences.

I had seen this idea before. Masques made by a UK firm.  Used by some veterinarians.  I even had one home for try out.  And tried this on my resident, but it was too complicated. I though, if it is too difficult on my friendly resident, so I cant use it on a scared semiferal.

Hunters who use birds of prey for hunting,  also they do use blindfolds on their falcons and hawks.

I have seen the Feline Health director at my shelter use these masks/blindfolds for cats - feral/stray cats - so she can administer meds/shots. They do work well in those situations when a cat is extremely traumatized and fearful of humans. I have never used one on any cat I have ever owned and I can't comment on how they would work for a bath - I do not think that would work well at all for bathing a frightened cat - I would think it would make matters worse. When the vets use them - the cat is on a sturdy table and not moved much at all. I think if you were to start moving them around and carrying them off - they would instinctively freak out and panic. Will be interesting to see if other's have any experience with these "masks" for calming cats for medical reasons.

I use something like this when I trim Lucy's nails.  She was getting so bad, biting and doing that ten claw grip of death on my arm that most cat owners know and dread.  Now, I'm able to easily slip it on her and while she growls and tries to nip me, I'm able to hold her in my lap and handle all of her paws.  What used to take days (1 nail at a time), now takes 2 minutes.  It has been a great help for me. She sounds upset while it is on, but is calm after I've removed it.