Sprinkle coffee grounds around the base of tender plants. The abrasiveness of the grounds coupled with the acidity creates a barrier that deters slugs and snails.
Sprinkling polenta/cornmeal around your plants helps if you have an ant infestation. The ants try to eat the granules, but they cannot digest it and starve.
A great mosquito repellent, Marigold is a good slug deterrent too. Plant them in and around your garden beds or veggie patch – insects hate the smell, and it will encourage them to stay away.
Plant nasturtiums in your vegetable garden because their flowers repel a whole lot of insects like caterpillars, stink bugs, aphids and white flies.
Place the rinds of oranges, lemons, or limes around the base of your strawberry plants. attracted to citrus, and you'll be able to gather up the slugs each morning to dispose of them.
Soap and water
Add two tablespoons of soap flakes to one litre of water and stir thoroughly until completely dissolved (this is quicker in warm water). Spray on plants to get rid of aphids and caterpillars.
Snails and slugs are attracted to beer. Place beer in a jar and they will enter the jar and drown.
Place them on the soil around your plants to deter snails and slugs.