Clearing old chemicals from farm sheds and workshops

31 October 2026

Most farms and workshops in the north-east have a corner nobody wants to sort out. A shelf at the back of the shed holds tins of a weedkiller long since withdrawn, a drum of something that might once have been sheep dip, half-used cans of paint and thinners, and a few bottles whose labels faded years ago. In a boat shed or a garage the mix is different, with resins, oils and cleaning chemicals, but the shelf looks much the same.

Why it cannot go in the skip

The temptation is to tidy it all into a skip or the general bin. That is the wrong answer, for the law and for the people who handle the skip. In Scotland, chemicals classified as hazardous waste fall under the special waste system and travel with a special waste consignment note. SEPA regulates that system. Farm and workshop owners must identify their waste and use authorised carriers and receiving sites rather than assume every old tin can be thrown away.

Know what is on the shelf

Disposal depends on knowing what each item is. A sealed, labelled container of unused product is the easy case. A tin with a corroded lid, a liquid decanted into an old drinks bottle, or a drum where two things have been mixed, is harder, and may need testing before anyone can classify it. The rule for anyone clearing a shed is to touch as little as possible. Do not open, combine or pour anything. Photograph the labels, note rough quantities, and keep the area dry and locked until the collection.

How a list like that becomes a collection, covering identification, classification, packaging and transport, is explained by Chemical Waste Disposal, which arranges chemical waste disposal for workshops and laboratories as well as for larger industrial sites.

Distance changes the plan

For premises well away from the city, a collection is rarely something that happens on a whim. Suitable packaging may need to be supplied in advance, items packed into approved containers, and the vehicle sent once with everything on the list ready to go. That is a strong argument for doing the job thoroughly rather than in instalments. Make an inventory of the business waste in the yard and workshop, so that the collection can be planned against what is actually there.

It also pays to think about where the shelf is. A shed beside a burn, or on ground that floods in a wet winter, is a poor home for leaking containers, and a track that drifts shut in snow is a good reason to arrange the clear-out in the long days of summer. An inventory made in daylight, with the labels and container conditions recorded, gives the eventual collection a far better chance of running as arranged.