bonitin wrote: MGJapan,
I had the same problem until wildlife was introduced in my garden. Do you know that snails and slugs have natural predators ?
Make your garden bird-friendly, by providing them bathing- and drinking places and nest-accommodations and plants and bushes that provides them food. Snails and slugs are on the menu of many birds, specially in the breeding time.
Very reliable slug-snail devourers are toads, frogs, salamanders.
If you want them to thrive in your garden you will have to put in a water element in the form of a pool, it can be little and shallow. They need it to breed in the spring. Don't be too neat in your garden, but allow some old logs, piles of old stones and the like for them to hibernate and sleep.
You might not see them often during daytime, but I can assure you they are very
active in the night.
One of my toads; you will notice how well-fed he looks !!!!
With chemicals you can only add more polution to our already over-poluted beautiful planet.