Succulents and cactus plants need fast draining soil in order to survive and grow their best. It's easy to make your own succulent potting soil, and cheaper than buying the commercial stuff. Here's my recipe and detailed instructions for DIY succulent potting soil! | GetBusyGardening.com
When the hosta "eyes" appear, I mix one part household ammonia with ten parts of water and pour this mixture around the eyes close to the plant. It doesn't hurt the plants, but it does dissolve the eggs that are laid around the roots. It has reduced the slug population noticeably. I also pour the ammonia solution directly on slugs that I see on the deck. Dissolves them right away.