WD-40, Water Displacement 40th Attempt, was originally created to protect the outer skin of the Atlas missile from rust and corrosion. Since 1953, WD-40 has been “a unique, special blend of lubricants. The product’s formulation also contains anti-corrosion agents and ingredients for penetration, water displacement and soil removal.” If you have a sticky problem, this just may be the solution.
If you have fake plants with plastic leaves (not fabric or silk), you can make the leaves look shiny and healthy by cleaning them with WD-40. They'll smell nice too! Lol.