Cleaning Barn, Coop and Greenhouse Benches

Cleaning barn, coop and greenhouse benches is a surface, tool, and container routine: you take off soil, bedding scatter, and plant debris, then apply a tested batch of HOCl you make on site. If you arrived looking for “hypochlorous acid for plants,” this is not a plant-treatment page. It does not cover spraying crops, treating plant disease, dosing irrigation water, or washing produce.

The machine this site walks through for small jobs is the Eco One, which makes a 1 L batch. When volume is the issue, the Hypo 7.5 makes a 7.5 L (2-gallon) batch. HOCL LLC sells machines only; it does not sell bottled HOCl. For the 1 L recipes, use How to Make Hypochlorous Acid at Home.

What this page covers — and what it does not

Covers: barn aisles and stall or run floors (once they are scraped and washed); coop floors and droppings boards (once they are scraped); greenhouse benches, potting tables, and walkways; tools (trowels, scoops, crate lids); empty pots, trays, and totes; door handles, latches, and other hard, wipeable surfaces in those spaces.

Does not cover: plants, soil in use as a growing medium, irrigation lines or tanks as a water treatment, crop spray, produce, eggs as food, feed, or animals’ water. It also does not cover anything applied to livestock, poultry, or pets. For crate and kennel surfaces in a home, that is a different page.

Wash feeders and waterers with your usual dish or equipment routine, empty and dry them, and keep HOCl out of feed and water. Bedding (straw, shavings, liners) goes out and, if it is fabric, to the laundry; do not spray a piled heap of bedding as a stand-in for removal and wash.

Clear the surface first

A bench, a coop board, or a stall floor holds soil, droppings, spilled feed, green film, and potting mix. Scrape and wash that off with detergent and water, and rinse or wipe until the surface looks clear, before HOCl goes on. A dirty board will not get cleaner because you sprayed over the dirt.

Work with tools and cloths you can wash. Do not dip a dirty cloth or a manure-caked brush back into the storage jug. Never mix HOCl solution with ammonia, bleach, strong acids or other cleaners; mixing with ammonia can release chloramine gas, and mixing with strong acids can release toxic chlorine gas. Add only the vinegar or additive your manual specifies, in the amount it specifies. If someone breathes in fumes or swallows solution, call Poison Help at 1-800-222-1222 (poisonhelp.hrsa.gov). If you used a different product on the previous pass, rinse that surface before HOCl goes on.

Move animals out of a stall or coop before you start, and keep plants off a bench you are washing. This is a surface job on an empty board, an empty pot, or a cleared floor.

A practical routine

Barn and stall or run floors. Scrape manure and wet bedding, wash the floor, then spray or mop with tested HOCl. Let the floor dry before you put down fresh bedding or return animals. Wipe latches, gates, and the handles of scoops and forks after you have washed those tools.

Coop floors and droppings boards. Scrape, wash, then apply HOCl to the cleared board and floor. Empty the box or tray completely before you wash it. Do not spray HOCl into bedding that is still in use, and do not treat this as a routine for the birds themselves.

Greenhouse benches and potting tables. Lift pots and trays, sweep off mix and leaves, wash the bench, then spray and wipe. Wash empty pots and trays the same way: physical soil off first, then HOCl, then dry before you refill them with mix. This is about the container and the bench, not the plant that will go in the pot later.

Tools. Brush off soil, wash, then wipe the cleaned metal or plastic with HOCl. Let plastic air-dry and wipe metal dry. Never put tools into a storage jug of HOCl.

Batch planning: Eco One or Hypo 7.5

A standard Eco One cleaning liter is the 200 ppm recipe in the how-to: fill the 1.5 L pitcher only to the 1 L line, add 2 g of food-grade, non-iodized kosher salt and 1 teaspoon of 5% distilled vinegar, fit the lid, and run Setting 3 twice (16 minutes), and check ppm and pH. The target pH is 5–6. How to read the papers, including the 1:5 method for a 500 ppm liter, is in HOCl PPM and pH Basics.

How far 1 L goes depends on the job:

• A backyard coop, a few tools, and one potting bench may fit inside a single liter if you use a spray bottle and a cloth.
• A barn aisle or a run of greenhouse benches will use more, especially if you mop. Plan a second liter before you start, rather than stopping mid-aisle.
• An 8 oz PET spray bottle holds a little under 0.25 L, so one Eco One liter fills three bottles and still leaves some for a mop or a tool bucket.

When 1 L runs cannot keep up, use the Hypo 7.5. It makes 7.5 L (2 gallons) in one batch, with programs listed at 200 ppm in about 8 minutes or 500 ppm in about 20 minutes and a pH target of 5–6. It ships without a lid, and its manual calls for daily leak and wire checks and monthly scale checks. Use the salt and 5% vinegar amounts in the current Hypo 7.5 manual; do not copy the Eco One teaspoon recipe into a 7.5 L tank. Specs and a side-by-side are on Choosing an HOCl Generator and compare.

Machines and supplies for this use are on the store page.

Testing, storage and labeling

Test every batch before you pour it. Do not use or store a batch below pH 4; chlorine gas can be released. A finished pH of 4–5 is not an automatic reason to discard the batch, but shelf life will be very short — use it promptly and re-test.

Store leftovers closed, protected from light, at room temperature or cooler, in HDPE, LDPE or PET. A shed that heats up in the afternoon is a poor storage place. Re-test after storage. The full conditions and the Eco One manual’s storage statement are in HOCl Storage and Shelf Life.

Label the jug with the date, the ppm reading and the pH, and keep it well away from feed, produce and animals’ water so it is not mistaken for any of those. The Eco One can also make a separate potassium hydroxide cleaner, from potassium carbonate in place of salt; if you use that cleaner on a greasy utility surface, keep it in its own labeled bottle and never mix it with HOCl. That cleaner is not a plant or animal product either.

A short checklist

1. Decide whether the job is a 1 L Eco One run or a 7.5 L Hypo 7.5 run.
2. Move animals off the floor and plants off the bench.
3. Scrape and wash visible soil; empty pots and droppings boards first.
4. Make and test the batch; confirm pH 5–6.
5. Spray, wipe, or mop the cleared surfaces, tools, and empty containers.
6. Let surfaces dry before you return bedding, fresh mix, or animals.
7. Recap, store, and re-test leftovers. Keep the jug away from feed and water.

This routine stays on benches, boards, floors, tools, and empty containers. It is not a recipe for plants, irrigation, crops, or food. For the first small job, start with the Eco One and the how-to; step up to the Hypo 7.5 when a liter at a time is not enough.