Now I do not have a lot of information about where you are at, so I am going to hit you with a shotgun blast of information. Some will cost a little money and some not so much.
Now cost wise and I am sure no one wants to go through the expense, but you can put a fence around your property at about 5' tall and the top portion have it leaning out. You want to go with it about 12" under ground because coyotes will dig.
Then you can use sensor light as they are real jumpy with those as well as a sprinkler system.
You can also get some wolf or coyote urine powder. This is what I think Mindy was eluding to. You can also order it from site:
nightpests.com/coyote.htm
On this site you will see other things that you can use as well.
Now there are also what I call good housekeeping rules and that is do not have garbage they can get into, police up any trash, fruits, and so on.
People that stay on the property if they have pets make sure they are spay and neutered. The sents will attract coyotes.
Now me I find the powder and the sensor lights as the most cost affective and they work great. Be sure to watch out for your small pets as they will for sure eat small cats and dogs. If you allow them out at night, then go with them and have a flashlight and something to make noise with. Coyotes are smart hunters. They are also brave by numbers. In other words the more of them there are the braver they are when traveling in packs.
Hope some of this helps and if you need more information let me know.