rbarata that's awesome how you use your camera to inspect your plants. I've used the method to look for tiny creatures in my aquarium, now I'm totally going to use it for my orchids. What a great idea 🙂
Seeing the conversation on how to get rid of snails, I have an option I didn't see listed. I've never experienced these tiny bush snails, but I have experienced the regular ones in my garden. Snails are snails, if something works for one it certainly will work for the other.
Diatomaceous earth is 100% natural and has never hurt any plant to my knowledge. You do want to be careful not to breathe it in as it can be damaging to your lungs, but other than that it's benign enough that you could actually eat it to get rid of internal pests.
Another method I've used is hydrogen peroxide 3%. I know there is lots of controversy surrounding peroxide. I've used it for many years to get rid of pests and various other ailments in my garden (as well as my mother who used it for many years before me, as well as my grandfather who used it for years before her lol) I've made it a routine to spray all new orchids with it when I unpot them just in case they brought friends to the party. In my personal experience, when used properly, it's NEVER hurt any plant. Only bugs and snails 😉

This assumption is 100% false. Bush snail have zero interest in slug/snail baits. None. You have to drench them in elimination chemicals to remove them, which is why they are so difficult to remove from a collection.

Diatomaceous earth isn't bait. You would sprinkle it throughout the surface and over as much of the media surface you can. When the snails travel they will have to crawl over it and it will actually cut into them. With the correct method, I believe it would in fact work.
Hydrogen peroxide 3% is something you can drench the entire plant and media with and in my experience kills the large snails found in the garden. Surely it will kill the small ones. I believe it also would be an effective method.
I only meant that if these two things work on a large snail.. more specifically if these things kill the large snails on contact (peroxide works faster than DE) it should do the same for any bush snail it comes into contact with. I'm in no way claiming it will eradicate an infestation instantly.

Bush snails are quite content to stay deep in the media, so diatomaceous earth is useless. What works on large snails does not work on bush snails.