Hello! I had a similar problem, for a very long time I struggled with these snake repellents Australia, snake repellents for yard from https://envirobug.com.au/collections/snake-repellers and that only I did not try again, nothing helped. My relative advised me to buy a pest repellant here plano pest control , he bought snake repellents for yard from them and saw a section on pest control there. Knowing about my problem, he advised me to purchase the product from them, as his problem was solved. I was surprised when the parasite just disappeared from my garden.