pests and cures

[size=medium]I'm new to this forum,but wonder if you guys agree with my idea!
I am,this growing season,going to use slug killer as a preventative.
I plan to decimate the slug population in areas where I intend to
grow salads and around flowers like Lupins and Marigold .[/size][size=medium]
I use bowls immersed to soil level.I disolve a packet of yeast
in powder form (0,14 Pence) in three pints of warm water
and three-quarter fill the bowls.
[/size][size=medium]Even in this relatively cold weather I discover dozens and dozens of
[/size][size=medium]casualties in the morning.[/size]
[size=medium]Am I kidding my self thinking that I can minimise damage
[/size][size=medium]to my plants this sommer or is this a winner ??[/size]