Jo wrote...."Not only does this asset keep the garden clear of slugs it also
keeps the rodent population down. It feeds on mice, rats and other small
mamals........."

Pity mine don't know about slugs and snails, but they do rip hell out of my
grass after field mice voles and moles.
I'll settle for thrushes to get rid of slugs and snails and the cats for the
other vermin.