Equinade Rug Seal 1L Horse Rug Canvas Waterproofer is a re-proofing formula to help water-proof cotton canvas. It can be applied easily with a brush or by spraying and has no fumes. Easy to use and very economic. Water-proofs cotton canvas. No fumes. Re-proofs and will resist dry rot and mildew. Suitable for all canvas with at least 30% cotton.« less