Abstract: A chemical barrier for rodents and/or reptiles including an elongated flexible, porous fabric tube 22 of a generally rope-like size, shape and flexibility contains a plurality of elongated bodies, 24, 26 . . . of granular repellent material 28. The bodies 24, 26 . . . are spaced from each other by short, generally repellent free gaps 30 within the tube 22 and the size of the granules 28 in each body is sufficiently large that they cannot pass through the fabric forming the tube 22. Barriers 32 at the gaps 30 prevent the entry of the repellent material 28 into the gaps and allow the tube 22 to be severed in the gaps 30 within spillage of repellent material 28.