Guides

A summer grooming routine built around flies, heat and skin

Short answer: no wash or spray makes flies disappear. But a citronella-and-tea-tree wash, paired with proper rugging, smart timing and a detangled mane and tail, cuts down bother, reduces rubbing, and keeps coat and hair healthier through the worst of the season. Grooming is one leg of the summer routine — not the whole thing.

Rugging, timing, shade and a decent wash-and-condition routine all have to pull together, or the flies win regardless of what's in the bottle. Products support the effort; they don't replace it.

Why summer is hard on skin and coat

Heat, sweat and insects show up together, and each one makes the others worse. A horse sweating heavily out in the field is also the horse standing still long enough for flies to land and settle, and a horse plagued by flies is one that stamps, swishes, and rubs itself raw against a post or a rug seam. Sun adds another layer on top, especially on pink skin around the muzzle, eyes and any white markings, which can turn dry, flaky or sore over a long, bright season. None of this looks dramatic on its own, but it adds up to a dull-looking coat and a horse that's audibly fed up by July.

Flies, rubbing, and the mane and tail damage cycle

What most owners underestimate is what fly irritation does to mane and tail condition over time. A horse rubbing its tail against a fence post to relieve the itch doesn't stop once the itch is gone — it snaps hairs, thins the dock, and can turn a full tail ragged within a few weeks of hot weather. The same thing happens to a mane rubbed raw under a fly rug that doesn't quite fit. Broken hair takes months to grow back, so the real goal through summer isn't just comfort, it's damage prevention. A horse that isn't constantly agitated by flies is a horse that isn't constantly rubbing, and that alone protects hair length and thickness better than any single product ever could.

The physical measures that do the heavy lifting

Before any wash or spray takes the credit, it's worth being honest: fly control is mostly a management problem. Products support the routine; they don't replace it. Here are the basics that actually move the needle:

  • A properly fitted fly rug and mask, checked every day for rubbing around the shoulders, chest and eyes
  • Turnout shifted to cooler, lower-fly hours — early morning and evening instead of peak afternoon heat
  • Shade or shelter out in the field, since horses standing in full sun for hours are the ones sweating and swatting hardest
  • Good manure management and less standing water near turnout, since that's where fly populations build up
  • Fans running in the stable on still, humid days, since flies get just as bad indoors then

Get these right first. Once they're in place, a grooming routine built around washing and conditioning becomes genuinely useful, instead of a sticking plaster over a management gap.

Building a repelling wash into the routine

This is where Repel Oil Shampoo earns its spot in the summer kit bag. Formulated with citronella, lemongrass, eucalyptus and tea tree, a single bath does double duty: it strips off the accumulated sweat, dust and grime of a hot day, while leaving behind a scent profile insects tend to avoid. Used as part of a normal wash — worked through a damp coat, focused on the areas flies target most, then rinsed thoroughly — it's a sensible way to freshen a horse up after work or ahead of turnout on a fly-heavy afternoon. Need a refresher on the basics of a proper wash, from wetting to rinsing to drying? Our guide on how to wash a horse step by step covers the full sequence, and the reasoning behind citronella and tea tree specifically is worth a read in citronella and tea tree for horses.

Worth setting expectations honestly here: a repelling wash supports the routine, it doesn't act as a barrier. The effect fades as the coat dries and sweat builds back up, so it works best as part of an ongoing routine — bathed regularly through summer, paired with the physical measures above — rather than a one-off fix you expect to last a week.

Keeping mane and tail detangled so bugs don't cause breakage

Tangled, matted hair gives flies somewhere to hide and makes it harder for a horse to swish itself clean, and a knotted mane or tail is far more likely to get pulled and snapped when a horse thrashes it against a rug or stable wall in irritation. This is where release-spray-conditioner earns its keep through summer. As a leave-in detangle-and-shine spray built on isopropyl myristate, it makes hair slide instead of snag, so a horse can swish effectively at flies without hair catching and tearing, and grooming sessions stay quick instead of turning into a wrestle with knots. Spray it through a clean, dry mane and tail after a bath, or as a quick top-up between washes, to keep hair manageable and cut the friction that turns a bad fly day into a damaged tail.

For riders competing through the summer months, keeping manes and tails in good order isn't just cosmetic — it matters for turnout standards too, and the routine here lines up with the presentation demands covered in eventing grooming: the three phases, where coat and hair condition get judged right alongside performance.

A realistic summer routine

Put together, a sensible summer approach looks something like this: rug and mask fitted and checked daily, turnout timed away from peak fly hours, shade on offer, and a wash-and-condition routine layered on top rather than relied on by itself. Bathe with a citronella and tea tree-based wash after sweaty work or ahead of a known fly-heavy turnout session, then finish mane and tail with a detangling spray so hair stays manageable and less prone to breaking when the horse fights back at flies. None of this eliminates flies entirely — nothing does — but it stacks enough small advantages together that most horses noticeably cope better, rub less, and come out the far end of fly season with a coat and tail in better shape than if you'd relied on a rug alone.

The other quiet benefit of a consistent summer routine is the regular close look it gives you at your horse's skin and coat. Running your hands over the body during a bath, checking under the mane, along the dock and around the girth, means you catch early rubbing, sore patches or anything unusual before it turns into a bigger problem. That habit of looking, more than any single product, is what keeps a summer coat in genuinely good shape.

Frequently asked questions

Does a citronella shampoo actually keep flies off my horse?

It helps rather than solving the problem outright. The scent from citronella, lemongrass, eucalyptus and tea tree is something many insects avoid, so a wash can cut down bother for a while after bathing, but the effect fades as the coat dries and sweat builds back up. Treat it as one part of a routine alongside rugs, masks and sensible turnout timing — not a standalone fix.

How often should I be washing my horse in summer to help with flies?

There’s no fixed rule here. Many owners find washing after particularly sweaty work, or ahead of a known fly-heavy turnout session, works better than sticking to a strict schedule. Over-washing can actually throw off skin balance, so match frequency to how sweaty and fly-bothered the horse really is, rather than washing on autopilot.

My horse keeps rubbing its tail raw. Is that just down to flies?

Fly irritation is a common cause of tail rubbing, but it’s far from the only one. Sweet itch, mites, and other skin conditions can all produce similar rubbing behaviour, and they need a proper diagnosis rather than a grooming fix. If the rubbing is severe, persistent, or you spot scabbing, patchy hair loss, or thickened skin, get your vet to look before assuming it’s simply flies.

What’s the actual difference between a repelling wash and a leave-in spray for summer grooming?

They handle different jobs. A wash like repel-oil-shampoo cleans the coat and leaves behind a scent flies tend to avoid, but the effect is strongest right after bathing. A leave-in spray like release-spray-conditioner isn’t about repelling insects at all — it keeps mane and tail detangled so hair doesn’t snag and break when a horse swishes at flies, protecting hair condition over the whole season rather than repelling on contact.

Which matters more for fly control — fly rugs or grooming products?

Physical barriers do most of the actual work — a well-fitted fly rug and mask, sensible turnout timing and shade are the foundation everything else sits on. Grooming products support that foundation by keeping the horse comfortable between rug checks and protecting coat and hair condition from the rubbing fly irritation causes, but they work best layered on top of good management, not instead of it.