I’ve read on other posts that people mix EcoVet with other fly sprays to make it a little less offensive.
Questions:
Thanks.
I stopped using it.
It’s made from mostly silicone oil (which dries out coat and skin, even though they claim it doesn’t, it’s works by evaporating…) fatty acids that are derived from palm oil or beef tallow (they claim the palm oil is sustainably sourced through plantations in Malaysia, these fatty acids are also the source of the horrid smell) and added fragrance.
Beef tallow is rendered beef fat after processing. Like when you cook down a steak, the fat left in the pan.
Frankly, it’s not worth the smell, nor the possibility of damage to pastures, as the fatty acids are known to kill grass.
Edited to add: I wouldn’t add anything to it, because then it won’t work as intended, and if you have a reaction or adverse problem after using it, you won’t be able to approach the manufacturer for support.
MSDS; https://www.statelinetack.com/ContentFiles/Associated_Content/EcovetMSDS.pdf
Apparently alcohol is not rated as dangerous, but the report is plastered with fire warnings. 
Most people I know who use Ecovet, do mix it with another fly spray, all kinds, to make it tolerable for themselves and the horse, and they still find the same benefit as full strength, and when that benefit is much greater than other sprays they’re using, it’s worth it.
I’m not sure there’s any real danger of any fatty acids killing grass in the very diluted amounts that end up on a horse.
Silicon oil doesn’t dry out hair. What you feel is the buildup
All the MSDS sheets come with all kinds of warnings that, in cases like this, are only real of you’re truly abusing the product. I mean, here’s the MSDS for Absorbine UltraShieldEX Don’t light it on fire, don’t dump it into water sources, all the same stuff
The husband of a friend of mine came up with Eco-vet. He is, in fact, a veterinarian, and his wife, my friend, competes in eventing. For a while you could only buy it at the large animal counter at the vet office. Just a little useless information.
Yeh, MSDS sheets make everything looks scary…look up the MSDS sheet for water 
Under the first aid section, skin contact: Wash affected area with mild soap and water and rinse area until no evidence of chemical remains.
Eye contact, rinse eyes with plenty of water or normal saline solution for at least 15 minutes. Ummm!
I don’t use it but if someone else in the barn does, I can feel it in my lungs. I stay away from it as much as possible
Yes, I know it is a noxious horror smell. My plan is to take my horse out of the barn and spray it outside so my barnmates don’t hate me.
Also be prepared for your horse to object. My two don’t have a problem with any other fly spray but they attempt to escape when I use the EcoVet (which I do everyday). This is even using it outside.
Just dilute it with another spray, I think most people I know doing that make it 1/3 or even 1/4 of the mix.
Anytime I mix one thing that’s oily (like Exocet) with other fly spray I clog the sprayer something fierce. Maybe that’s just me.
Don’t spray it near any grass. It will kill the grass. 
I have not mixed it, and found that it works well. And I’ve also found that if I spray it in a ventilated area and I don’t try to coat the horse with it as I normally do with other flysprays, I don’t start gagging. It really is a “less is more” scenario.
YMMV.
I have not noticed this. Are others having this experience too?
(I admit that I have not used it this season at all, but I used it last summer.)
Thr product label says: “Do not dilute Ecovet Fly Repellent prior to use or combine or co-apply with any other skin treatments, including soaps and detergents.” FWIW
Yes, but I always wonder if this is because it would negatively impact their sales.
Well, Endure says “For dirty horses, shampoo and rinse thoroughly. Wait until the coat is completely dry before applying”
As many people as I know who mix EcoVet with other fly sprays, and nobody has died, combusted, had their skin slough off, etc, I would expect that the label “warning” is to preserve their sales.
I use EcoVet and have no issues with the horses or grounds.
I use it when the flys are really bad (it smells too terrible to use when they are only annoying) and have never had an issue with my grass.
I and every horse I have used it on will sneeze if I spray even a bit too much. However, I appreciate the fact that it works and am willing to put up with the smell!
I just spray normal fly spray and then add on EcoVet at “pulse points”: a spray on front legs, hind legs, croup and poll.
Method does NOT help with the rancid smell, but I figure I get the best of both worlds.
Anecdotally, I do feel that EcoVet is the only thing that helps with the Bombers, Green Heads, etc,
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