Abstract: Compositions and methods for delivering chemical or biological agents, nutrients or hormones to insects, especially chemical and biological agents that are effective in treating or preventing diseases or parasites in beneficial insects such as honeybees. The compositions generally comprise an oil, a protein/carbohydrate material, and an active ingredient. The composition may be compressed and formed into tablets that are placed in locations where insects are likely to come into direct contact therewith.

Abstract: Improved film-forming skin protectant compositions are provided which are capable of forming a long-lasting elastic barrier film when applied to skin; the compositions have particular utility as barrier teat dips, for protecting cows against mastitis, especially during their susceptible non-lactating periods. The compositions include a film-forming component (preferably a mixture of polyether polyurethane and nitrocellulose) dispersed in a compatible carrier and further having a quantity of a tackifier resin incorporated therein in order to increase the time of adherence of the composition to skin, as compared with an otherwise identical composition without a tackifier resin. The compositions may also include a germicide (e.g., chlorhexidine diacetate), and a coloring dye.