All my fruit plants and trees are getting lots of greenfly slug and snail problems.
I have them all in a plastic greenhouse I have sprinkled salt around the plant pot bases to stop the slugs and snails and the salt won't get on the soil as it's around the pots on the paving.
I've tried py spray that's meant to be food friendly on the leaves to stop the greenfly or blackfly and aphids but it seems to drown them but not actually repel them I'm sure spraying water would do the same thing.
What are some food friendly ways to deal with them that won't poison me or animals.
I've heard that the wool pellets are meant to be good for slugs or snails are they safe for the plants and to eat after?