Many people begin fighting slugs from the very beginning of the season and do not stop until frost sets in.
With such a responsible approach, the risk of pests appearing on the site will be minimal.
Slugs will not be able to penetrate the site if you install barriers. The width of such "lines" should be ten centimeters or more.
We use them not only around the perimeter of the site, but also near plants. Ideal options are pine needles, sand with small sharp shells, walnut shells and chicken egg shells.
Spices will not harm the plantings, but they can make them unattractive to slugs. Ground chili peppers and dry mustard are ideal options.
They can be used for treating paths and dusting plants.
Tobacco dust can also be considered.
Chemicals
If there are a lot of slugs, then you cannot do without specialized means. Therefore, you should not refuse to use them. It is best to use them in the summer to destroy the maximum number of pests.