Store grain in sealed metal containers, because rats chew through wood, plastic and burlap, and a single rat eats about 10 kg of grain a year and contaminates ten times more. Stack hay on pallets or rails with air channels, keep it fully dry, and treat rodents in a feed store as a disease source as well as a loss.
Part of Barn & Livestock Housing Design
Feed storage and rodent prevention is the set of containers, stacking methods and barriers that keep animal feed dry, clean and out of reach of rats and mice.
Rodents Cost More Than They Eat, And They Carry Disease Into The Feed
A rat eats about 10 kg of grain a year and contaminates ten times more through droppings, urine and gnawing. That is the economic problem. The health problem is worse: rodents carry organisms that reach people and livestock through contaminated feed, water, dust and bites. Rodent prevention is therefore a hygiene system as much as a loss-prevention one.
What You Need
- Metal containers with tight lids — salvaged drums and bins
- Pallets, rails or poles to lift hay off the ground
- Hardware cloth and patching material to close gaps
- A clean, dry, raised store with no gaps, and a clear strip around it
- Cats, traps or both — see Biological Control and Physical Barriers
Method: Seal The Store
Step 1: Put grain in metal. Use sealed drums or bins, which rats cannot chew through the way they can wood, plastic and burlap.
Step 2: Lift the hay. Stack hay in a dry, ventilated space on pallets or rails, not directly on the ground, and leave air channels between bales.
Step 3: Make sure the hay is dry. Wet hay can spontaneously combust; never store hay that is not fully dry. See Feed Storage Integration.
Step 4: Close the building. Patch every gap with mesh or sheet metal. Rat Proofing gives gap sizes and rat-guard dimensions.
Step 5: Clean up spills at once. Loose grain on the floor feeds the rats you are trying to starve.
Step 6: Keep the area clear. A bare strip around the store lets you see tracks and droppings.
Worked Example
Loss from rats in a year, from the figures above. One rat eats about 10 kg and contaminates ten times that amount, 10 × 10 = 100 kg. Five rats eat 5 × 10 = 50 kg and contaminate 5 × 100 = 500 kg. The contaminated grain is not all lost, but it can no longer be trusted as clean feed.
Common Mistakes
- Wooden or plastic bins — rats chew through them.
- Hay on bare ground — damp, rot and rodent nests.
- Sweeping dry rodent droppings — see the safety note.
- Tight stacking with no air channels — heat and moisture build up inside.
Safety
Rodent disease routes
Rodents spread disease by several routes. Leptospirosis passes through their urine, in water or wet soil, into cuts or the mouth. Salmonella passes through their droppings into feed and food. Some hantaviruses are breathed in as dust from dried droppings and urine in closed, undisturbed spaces. Plague can pass by flea bites from infected rodents. Do not sweep or blow dust from rodent droppings; wet them with water or disinfectant first, wear gloves and a cloth mask, and wash afterwards. See Zoonotic Diseases.
Moldy feed is poisonous to animals and people: never feed visibly moldy grain or hay. Wet hay can heat and ignite in a stack.
What’s Next
- Learn next: Rat Proofing — guards, mesh and gaps in detail
- Combine with: Above-Ground Granaries — a purpose-built rodent-resistant store