These consist of thin plastic sheets, covered with non-drying glue and are usually hung up just above the plants to be protected. If thrips are the main problem, a blue trap is preferable. Colour traps are frequently used by commercial greenhouse operators. Fitted with an internal check valve to allow the duster to be operated in any direction. Will give many years of service at a modest price and allows the user to apply a fine, even coating of dust.
Wide neck allows for easy refilling.
Some gardeners prefer to use better quality tools, and this professional stainless steel sprayer fits into that category. Equipped with an adjustable pressure regulator and brass spray gun, it allows the operator to apply spray at a constant pressure and a consistent spray droplet size. Capacity - 4 litres. Efficient manual pumping action.