Recently corrosion problems have been observed on wires used to hold together wooden wire-bound packaging crates. In the manufacturing process wires are attached to the wooden boxes dipped in a preservative (biocide treatment) and then stacked and stored until they are assembled and shipped. The corroded wires began to appear concurrently with a change in the preservative treatments. Here we present results of laboratory corrosion testing of ten different preservative treatments that could be used in the dip-treatment process. Wires from untreated packaging crates were cut to size and used as corrosion coupons. These wires were then attached to small pieces of wood dipped in preservative and then stored in an airtight container for either two or eight weeks to simulate the storage of the crates after treatment. Differences in the corrosiveness of the preservatives could be observed in both visual inspections and weight loss measurements. In preservatives that contained cupric ions the cupric ions from the treatment solution were identified as part of the corrosion mechanism. The results presented herein can be used to specify less corrosive treatment solutions.