We have a terrible problems with Slugs here (especially as my neighbours don't do much in the way of gardening) and I am already on my second packet of slug pellets. I used to have my Hostas in the ground but it was a nightmare so I now have them all in tubs and they are looking good again.
We are each of us angels with only one wing, and we can only fly by embracing one another. Kindness is the language which the deaf can hear and the blind can see.
You're certainly doing a good job of keeping them away Rf. Well done. I split the 1 into 3 that a lady gave me last year and so far so good, I've used eggshells coffee and pellets. One of them is working.