My sweetcorn are going great this year despite the weather. However I've got a small problem

On all the hobs (or is it cobs?) The stingy bits have been eaten by something. By the millions of slugs I seems to have on my allotment this year I'm assuming it's them. Hopefully they've already been pollinated. So far I have peeled back the skin to let more of the stringy bits out.

Any more advice? Has this happened to anyone else?