Great questions. Thank you.
First of all you do not need to protect the entire animal. Placing a few drops of Ole Time Woodsman Fly Dope around the head or neck area will alter a biting insect's ability to detect the carbon dioxide flume that a human or animal exhales.
This is where we need to be a little creative. For instance, sheep's wool on several places on a headstall for a horse should do the trick.
A neck belt with sheep wool or Velcro with cotton balls will work for cows and goats.
Any kind of porous collar for a dog or cat should be sufficient. A bandana for your dog works great and looks cool as well.
A few drops of Ole Time Woodsman Fly Dope will do ya!
Science has now, finally, proven that certain fragrances will interfere with a biting insect's receptor to detect your pets carbon dioxide flume.
Enjoy your pets and your outdoors,