That Blue Stuff, Fungus Amungus, Winky Wash n Udder Stuff

When a horse breaks out in rain rot, scratches, or stubborn fungus, owners often burn through bottle after bottle of overpriced products that never quite work. That is exactly the frustration that started Hay Where's That, Inc. and its flagship lotion, That Blue Stuff. The line now spans three purpose-built formulas — That Blue Stuff, It's A Fungus Amungus, and Winky Wash 'n Udder Stuff — built on natural antiseptics, carrier oils, and skin-soothing botanicals rather than harsh chemistry.

What does That Blue Stuff actually treat?

That Blue Stuff is a topical antimicrobial, antifungal lotion for the long list of skin troubles horses pick up in turnout and the show ring: rain rot, scratches, sweet itch, ringworm, cannon crud, hopple burns, chafing, saddle sores, and coronary band fungus. It works on contact — a non-sticky, non-greasy formula that does not need rinsing, so you can apply it daily and turn your horse right back out. The blue color comes from chlorhexidine gluconate, the same antiseptic veterinarians reach for, while avocado, hemp, and aloe carry it into the skin and lavender and sage calm the irritation underneath.

How do you wash fungus off legs and body?

It's A Fungus Amungus

is the leg-and-body wash companion to the lotion — a broad-spectrum antimicrobial, antifungal cleanser for rain rot, sweet itch, mud fever, scratches, ringworm, and summer sores. Sponge it on or add it to a bath bucket; it is gentle enough for daily use, so it pairs naturally with That Blue Stuff for deeper or more widespread cases. The blend layers hemp, grapeseed, and avocado oils with witch hazel, lemon, lavender, and rosemary to clean, soothe inflammation, and support healing tissue all at once.

Is there an easier way to clean a sheath or udder?

For one of horsekeeping's least-loved chores, Winky Wash 'n Udder Stuff is a gentle conditioning sheath and udder wash that loosens and removes smegma, beans, and irritating crud without the scrubbing that makes horses fidget. It is water-soluble and rinses clean, and the recipe is rich with moisturizers — grapeseed, hemp, coconut, olive, and jojoba oils plus aloe vera, witch hazel, grapefruit, and rosemary — so the skin is conditioned, not stripped. Owners report the cleaning goes faster and far more peacefully than the old scrub-and-pick routine.

Founder Tina Dennis built the first batches for her own barn after deciding the equine products on the market were both overpriced and ineffective. Drawing on years of experience with essential oils, she mixed a formula she could actually trust and kept it in small plastic tubs that traveled from stall to stall. The name stuck the way barn nicknames do — staff kept calling out "Hey, where's that blue stuff?" when they went looking for it. As trainers and fellow horsemen saw results, Tina commercialized the formula and grew the line into the three products sold today, all built on the same promise of safe, non-toxic ingredients.

What do horse owners say after using it?

The brand's success stories run heavily toward horses that had failed everything else. "My mare had lost so much hair on her face and body that she was almost bald, but after using these products her hair regrew and completely diminished the rain rot," wrote Scoot's owner. Rico's owner saw movement almost overnight: "less than 12 hours later it looks so much better! This product is amazing, and I am hooked!" And after a long search, Cash's owner landed here for good: "I tried numerous products and have found only That Blue Stuff and Fungus Amungus have worked."