If you’re a calf housing specialist, you already know that a good calf pen is only as strong as its weakest, and that’s almost always the part no one wants to talk about: waste storage. When I walk barns across the Midwest, I see so many farms that pour thousands into comfortable, draft-free pens and high-nutrition milk replacers, then cut corners on where that waste goes. That’s a mistake. Calf waste isn’t just smelly—it carries pathogens that cause scours, respiratory issues, and even set back growth rates. And bad waste storage turns a safe barn into a breeding ground for problems that cost you time, money, and sleepless nights. Over 15 years as a calf housing supplier, I’ve helped hundreds of farmers rethink their waste storage areas, and the ones that nail it don’t just follow the rules—they design for their calves, their staff, and their bottom line. Let me walk you through what works, based on what I’ve seen stand the test of time. Calf Housing
First, start with location—don’t just stick it somewhere out of sight. The most common mistake I see is a waste storage area tucked in a dark, far corner of the barn, next to the ventilation system, or right against the calf pen walls. That’s a recipe for spreading pathogens. Calves breathe shallow air, so even small amounts of ammonia or fine manure dust from a nearby storage area can irritate their delicate respiratory tracts, which makes them more prone to pneumonia. And if the storage is too close to the pens, rain or cleaning runoff can seep over and contaminate bedding or milk buckets. The sweet spot? Position the waste storage area 10 to 15 feet away from the nearest calf pen wall, and at least 50 feet from the barn’s main air intakes. It should be on a slight slope—no steeper than 2 percent—so that any accidental runoff flows away from the barn, not toward it. If you’re in a high-rain area, add a small ditch or a French drain between the storage and the barn to catch excess water. Also, never put it on the north side of the barn in cold climates, because that’s where cold wind blows through; freezing manure becomes a nightmare to handle and can crack storage walls over time. I once worked with a farmer in Minnesota who moved his storage from the north side to the southeast, and he cut his waste handling time by 30 percent because the manure thawed faster in the sun.
Next, size it for your operation, not just for today. A lot of farmers build a storage area based on how much manure they have in a month, but that’s short-sighted. Calf waste is different from cow waste—young calves produce wetter, more pathogen-heavy manure, and you don’t want to empty it too often, especially during bad weather. If you’re raising 50 to 100 calves, plan for 4 weeks of storage at minimum. If you’re over 200, go for 6 weeks. Why? During a snowstorm or a heatwave, hauling can get delayed, and a full storage area is way better than having to spread or dump partially finished waste in the barn. Also, account for bedding—most calf pens use straw or wood shavings, which take up extra space. A good rule of thumb is to add 20 percent to your total volume to accommodate bedding, because it doesn’t compact the same way solid cow manure does. I had a customer in Iowa who built a 500-cubic-foot storage for 100 calves, and by the third month, he was overflowing because he didn’t account for the wood shavings bedding he uses. He ended up adding a second smaller bin, which cost him more than if he’d sized right the first time.
Then, the base is non-negotiable. A dirt or gravel base sounds cheap, but it’s a disaster waiting to happen. Manure is acidic, and over time, it will leach into the ground, contaminate groundwater, and create a mess that’s impossible to clean. The base needs to be a reinforced, concrete slab, at least 6 inches thick. Add a 1 percent slope toward a drain, not toward the barn, and line the edges with a 4-inch tall concrete curb to stop runoff from spilling over. For extra durability, use a fiber-reinforced concrete so it doesn’t crack when a tractor or a waste cart drives over it. I’ve seen farms use old asphalt, but it softens in hot weather and stains too easily. The concrete base also makes cleaning way faster: you can spray it down with a pressure washer at the end of each storage cycle, and there’s no dirt or bacteria left behind. Another thing: make sure the drain connects to a holding tank, not to a regular septic system. Regular septic systems can’t process calf waste, and you’ll get fines from the county in no time. If you don’t have space for a holding tank, use a sump pump to redirect runoff to a designated waste management area, like a lagoon.
Ventilation is something most people overlook, but it’s the difference between a storage area that’s manageable and one that smells so bad your staff avoids it. Manure releases ammonia, hydrogen sulfide, and other gases that are not only smelly but also corrosive. If those gases build up, they will eat away at metal parts, damage the barn walls, and even make the barn’s overall ventilation less effective. A good waste storage area needs passive ventilation at minimum: install two vents, one at the top of the back wall and one near the floor on the front wall, to let air circulate. If you have the budget, add a small exhaust fan that kicks on automatically when ammonia levels get high. This is especially important in warm weather, when gases build up faster. We had a farmer in Georgia tell me that before he added vents, his staff would only go near the storage area when they had to, and they’d rush through it, which led to mistakes like spilling waste. After the vents, he said his team was willing to help with cleaning, because the smell was gone, and their sick rates went down too—less ammonia seeped into the barn.
Accessibility is key for your staff, not just the tractors. If the waste storage area is hard to get to, or if the door is too small for a manure cart, your team will skip proper disposal, and that leads to unsanitary conditions. The door should be at least 12 feet wide and 10 feet tall, big enough for a standard 1-ton waste cart or a small tractor to pull in and turn around. Add a concrete apron outside the door so the cart doesn’t get stuck in mud when it’s raining. I always recommend installing a loading dock if you plan to haul waste off-site regularly—this lets you lift the waste bins straight into the back of a truck without having to drag them, which saves time and prevents spills. Also, mark clear paths from the calf pens to the storage area, no obstacles like extra equipment or feed bins blocking the way. One of my biggest pet peeves is a storage area hidden behind a stack of hay; it’s inconvenient for the staff, so they’ll put off emptying, and that leads to overflow.
Sanitation features that protect both calves and staff. First, add a handwashing station right at the entrance to the waste storage area. When staff handle manure, bacteria can get on their boots and clothes, and tracking that into the calf pens is a top cause of scours. A simple foot bath at the entrance is even better—filled with a diluted bleach or disinfectant solution, so staff can step in to clean their boots before going back to the calves. Second, use easy-to-clean waste bins, not just piles on the concrete. Plastic or metal bins with lids work best; they keep pests like flies and rodents out, and they’re easy to haul. Avoid wooden bins—they rot fast and trap bacteria. If you’re using a lagoon, make sure it’s fenced off with a 4-foot high electric fence to keep predators out, and to prevent staff from accidentally falling in. Also, inspect the storage area every week: check for cracks in the concrete, standing water, or any sign of pest activity. If you catch a small crack early, you can patch it for a few dollars, instead of having to replace the whole slab later. I once had a customer who ignored a small crack, and over two years, it got big enough that water started seeping into the groundwater, and he got a $1,500 fine. That’s a mistake no farmer wants to make.
Wait, let’s talk about compliance—because waste storage isn’t just a farm decision, it’s a legal one. Every county and state has rules about how close waste storage can be to water sources, how much volume you can store, and how you handle runoff. I always tell my clients to check with their local agricultural extension office before building, because the rules change a lot, and non-compliance can shut down your operation. For example, in some areas, you can’t have a storage area within 100 feet of a well or a creek, and you have to keep detailed records of when you haul waste. The good news is that a well-designed waste storage area can actually help you stay compliant, because it prevents runoff and keeps waste contained. We’ve worked with clients who use our calf housing systems and add our waste storage designs, and they tell us it’s been a big part of passing their county inspections with no issues.
Now, let’s tie this back to why this matters for your calves, not just your farm. A well-designed waste storage area reduces pathogen load in the barn, so fewer calves get sick. Fewer sick calves mean less money spent on antibiotics, less growth setback, and more weight at weaning. I’ve seen farms with bad waste storage have 20 percent higher scours rates than farms with good storage, and that adds up to thousands of dollars lost every year. For staff, a good storage area makes the job easier and safer—no more lifting heavy bins, no more inhaling toxic gases, no more rushing because the smell is bad. That means lower turnover, too, because staff are happier to work on a farm that’s well-run.
If you’re a calf farmer looking to upgrade your waste storage, don’t treat it as an afterthought. It’s not just a place to put poop—it’s a critical part of your calf’s health, your farm’s efficiency, and your compliance with local rules. We specialize in calf housing solutions, from custom pen designs to integrated waste storage systems that fit your operation, whether you have 20 calves or 500. If you’re ready to talk through what works for your specific setup, reach out to our team to discuss your needs and get a tailored solution.
Sheep Turnover Crate Reference:
- American Association of Bovine Practitioners. (2021). Calf Housing and Management Guidelines for Preventing Neonatal Diarrhea. AABP Press.
- University Extension, College of Agricultural, Consumer and Environmental Sciences. (2022). Waste Storage Design for Small to Mid-Sized Livestock Operations. Land Grant University Publications.
- USDA Natural Resources Conservation Service. (2020). Manure Management for Beef and Dairy Calf Operations. NRCS Technical Note.
- National Animal Health Monitoring System. (2021). Calf Health and Production Benchmarks, Part 2: Management Practices. USDA APHIS.
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