Person with torch in garden at nightRelief at the first sight of spring can quickly give way to annoyance at the amount of work that needs to be done in the garden (though luckily, this month should see you strike mowing, at least, off your list). There’s the mulching, the watering, the maintenance, and the planting to be done – and that’s before you even start to talk about managing unwanted garden guests. Slugs and snails feel like the natural enemies of many green-fingered gardeners, though only a few species actually put your hard-earned seedlings at risk. But killing them