It's a U.K wide problem, thanks to warm and wet days and nights, perfect weather for slugs and snails. Buy the pellets with animal repellent impregnated in them, to give other wildlife a bad taste if they try to eat the dead slugs. A beer trap works well, if you can bring yourself around to pour good beer in to the trap

Here in Devon we have had no frost this winter, consequently I have greenfly on my hosta's, slugs and snails queueing up to enter my garden, blackfly on my osteospermum, and a whole host of pests, and it's only May!