Volck Oil

Has anyone used Volck Oil on the plants? Would this be a good idea?

It's not too bad i mix about a teaspoon per quart spray bottle. Filtered Drinking water not tap due to high clorine levels. Spray it and leave it. The leaves look so much better and kind of glossy.. I don't rinse because I feel it doesn't leave a nasty looking film, and I don't smoke the leaves anyway. I don't spray during flowering, and it has seem to not do any noticable damage or shock to the plants. Bug's have not been infesting since.