Q.How Do I Go About To Get Rid Of Snails, Worms Etc. Eating My Plants And Succulents?
I have killed some snails and worms but the next day there is more damage to my plants. I have used snailban, carbodust, pest control poison, but they just appear again. Then also that small white lice, think they call it mealy bugs, they literally appear overnight in plants that never had them.

Certified GKH Gardening Expert
Anything you can do to encourage their natural enemies will help. Here are some articles that should help with all these issues. Mealybugs can be difficult to control. It takes persistence.
https://www.gardeningknowhow.com/plant-problems/pests/insects/organic-snail-control.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/slug-snail-eggs.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/prevent-caterpillars.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/outdoor-mealybug-control.htm