Instead of glass how about lava rock...like they use for 'mulch' around shrubs and such. You should be able to find bags of it at home improvement stores. It'd be safer for you and your rowdy pup.

I think the only way to know about these things is to try them. I say go for it. The worst that can happen is it doesn't work and you have to try something else. I had some horrible damage on some or my hosta this spring and haven't been sure what combination of critters caused it. I think it was mostly pill bugs getting the fresh growth but maybe also earwigs and possibly some slug damage, although I never actually saw one. I did find a few some small snails but there was never actually damage in the areas I found them. I bought some nice but cheap plant stands and put the worse affected on them, but by then most of the damage was done for this year. I figured getting those off of the ground would help but even thought about putting a vaseline coating along part of the legs next spring to see if that might discourage anything from climbing them. You just never know what the solution might be.

Applications of ammonia, esp. in the spring, has certainly slowed slug production down in my garden too.

bet it doesnt work ...

long ago and far away ... i think i recall a slug slithering down the edge of a razor blade ...

what about a can of expandable foam ... that way your bricks wont get even heavier????

ken

https://vimeo.com/65745551

Slugs will hide under anything. I had one slug inside one of my baited vole tunnels, surrounded by poison pellets, thinking it was a vole. Other slugs like to hide below those tunnels.

Amazing video, Ken. So much for my vaseline idea discouraging them. Maybe vaseline with cayenne mixed in and covered with burning fuel oil?

Good Idea Ken. Eliminating that void should help. That is an amazing video.

Generally, I don't have much trouble with them. I don't know if it was our rainy spring or the change to more shade in the back yard, but I have more damage. The weatherman says El Nino will be back in the fall, so it's going to be wet again.

Do you just put straight ammonia in a spray bottle?
thanks,

bk

What about sprinkiing a little cornmeal in those areas:

Set out a shallow container with cornmeal in the bottom. Slugs are attracted to the cornmeal but quickly dehydrate and die.

Mix ammonia with water. I use 10% ammonia / 90% water in spray bottle. I spray the undersides of leaves and surface of the soil/potting medium around the base of the plant. This is most effective when slugs are active (in the cooler early morning).

Some will argue ammonia is effective only with direct contact with the slug...so your mileage may vary. For me I feel I'm doing something rather than doing nothing. I've also been known to squish 'em using twigs, nuts or whatever's handy during morning rounds.
The last few years in spring I've been doing a drench before leaves unfurl... something like 20% ammonia/80% water. This year I've seen fewer slugs and damage, even with our very wet Spring.

I agree that it's likely that your overly wet weather has multiplied the problems you've been having. Sorry for your troubles...