20 & still they come!
Kate, it attracts them really quickly. So you can either collect & drop into salty water, no thanks, or stamp on them. Ok the really big orange ones I judder at doing a stamp, so have been know to chuck well over into the adjacent open ground where lots of food for them! Anything which harmlessly gets rid of the slimey so n sos is great for me.
Signs of hog having been around too, so that's good. J.