yes they will resprout. I would use a slug pellet/beer trap to get the slimey little critters.

I save all my crushed eggshells too,and put a wide circle around them.It works for me,You need to like eggs though,as it takes lots.Lol. Started collecting them
last month,in an old plastic container.

I find copper collars work well. Gives the nasty blighters a shock and they go away!

We are well known in Yorkshire for the catch phrase of "how much?" Lol.so I try the freebie way first :o)).Also smear Vaseline around the bottom of containers,which helps too.