Experts and BHG readers answer.
Slugs on hosta
Well I recommend a product called Escar-Go!. It's a slug repellent that actually works best when the soil is moist and it should not move on you when it rains. You can buy it from Garden's Alive, www.GardensAlive.com
As far as the leaves are concerned, you can safely remove any that are really unsightly, but I'd still leave as much growth as possible so the plant can build up strength before winter.