Separation is the rule everything hangs on
Most farm poisoning accidents are storage accidents: a sheep that broke into the feed store where the spray cans sat on the floor, a calf that licked a leaking container left by a gate, a horse fed from a scoop that had measured something toxic an hour earlier. So the first rule is physical separation. Chemicals and medicines live in their own locked space — a metal cabinet, a dedicated store room — that animals cannot enter, cannot reach through fencing, and that is nowhere near hay, feed or bedding. If an animal can get its head to it, it is not stored; it is offered.
Locked, labelled and off the floor
Keep every product in its original container with its label intact. Decanting into a drinks bottle or an unmarked tub is how people and animals get poisoned by something that looked like water or feed. Store containers upright, off the floor on shelving, away from frost and direct sun, which break down both the product and the plastic holding it. Fit a lock or at least a childproof, animal-proof latch, and return everything to the cabinet the moment you finish using it — the tub left out 'for later' is the one the yard dog investigates.
Medicines get their own locked box and a list
Veterinary medicines deserve a box of their own inside the locked store, kept clean, dry and in date order so the oldest is used first and expired stock is spotted rather than administered. Keep a simple written inventory: what you hold, what it is for, and when each item was opened or used for a particular animal. That record protects animals as much as tidiness does — a helper who can see that a ewe was treated last week will not treat her again by mistake, and a vet on an emergency visit can see at a glance what is already in the animal's system.
Spills, empties and disposal
Treat a spill as an animal-safety event, not a housekeeping one: shut animals away from the area, clean up wearing gloves, and never hose chemical spills into a yard drain animals drink near or a watercourse. Empty containers are not toys, feed scoops or water buckets — rinse and store them with the full ones until they go back through the proper disposal route, because the residue in an 'empty' tub is still concentrated enough to harm a curious goat. Never burn chemical containers where stock graze the ash.
Records that make the system hold together
Storage rules drift when they live in one person's habits. Keeping the medicine inventory, product notes and each animal's treatment history together in KinsLe's Pet Passport — the records packet that travels with the animal to vet visits, shows and sales — means anyone covering your animals can check what is stored, what it is for and what an animal has already had before they open the cabinet door, so the locked cabinet, the written list and the animal's own history tell one consistent story.