Schultz Boost Pacs are convenient and mess free. It contains an all purpose plant food that can be used both indoors and outdoors. It is for use in watering cans and is pre-measured to contain the right combination of essential nutrients that instantly feeds for bigger plants and more blooms. It is safe for all plants when used as directed. It is the quick and easyway to beautiful flowers, lush foliage and fresh homegrown plants. It provides instant feeding without the mess.