hey nuggs the plants sure do show a big difference when ya use the seaweed extract on them we used a sprayer and foliar sprayed when i see the first bugs and haven't had any since we did it a couple times in a row and seemed to take care of it . the bugs don't like the copper,boron in it from what the grape grower guys said . them growers are really anal about their grapes so they are good ones to try the extract . the one that used it even has his leaves analized for nutes and everything in them .