You say it like it was not done before (like with mosquitoes), except now there would be more chance of success because they wouldn't unexpectedly mutate.
But anyway another comment says these ticks also can repro sexually so whatever
Can you link to such a trial? I only know of gm modified new insects, to take over and die (they reproduce a lot, but their offspring dies, so other normal reproduce less).
But of a manufactored virus or bacteria I have not heard yet. And I think it would be way more dangerous.
Weren't mosquitoes about infertility? Making infertile ones that can't effectively reproduce. With something that can clone itself that isn't much of an hurdle...