Mosquitos are attracted to carbon dioxide.. I am certain composters outgas co2.
Keeping your area clear of breeding grounds is essential.... here we do have them but only where you have stagnant water.... Yep I realize this is impossible for certain areas...
Vitimine B and Garlic in the diet are good for fleas.
Here the ticks can live up to two years without a water source other than dew... they hibernate under the leaves of bushes waiting for dinner to brush them off. It used to be every time we went for a trail ride wed untack the horses and go to work picking ticks off. I got 22 one day... The next day I found the rest just latched on for a meal for a grand total of 34... counting the ones I found on me.
How would Bayvantic work on horses?
Havent heard of it before but from the pictures of the sites I found it on... It appears to be similar to Advantage here in the US. those are for dogs and cats.
There are sprays these days for horses that have many of the same ingredients. And IF you know you are going to be riding in an infested or unknown infestation level... Spraying with those may help. But horses sweat and sweat washes off many insect repellants. Most of us focus on repelling flies around the face and ears.... and tender indefensable places like tummies and little folds of skin in their arm pits. There are roll on repellants for those places.
But I am not a fan of chemicals... herbally derived chemicals are pretty good in this case. We (horse people) make our own fly sprays Using Avon;s Skin So Soft which is a hand lotion and add in vinegar and eucalyptus and distilled water.
U.S. Forest Service Bug Spray Recipe
1 cup water
1 cup Avon Skin So Soft Bath Oil
2 cups vinegar
1 tbs. Eucalyptus oil (found in health food stores)
Optional: few tablespoons of citronella oil.
the one I know made a gallon and you can tweak the Skin so soft because I cant bear the smell of it.
Shake spray bottle well before spraying on horse, human or dog!
Past poultry: Buff Brhama, EE, Barred rock, Wellsummer,
Bantam mixes, Araucana, Turkeys, & Guinea Fowl.
Future poultry: Guinea Fowl, Sumatra, Wellsummer, Muscovy
"A dream without a plan is just a wish" Katherine Paterson