Thank Polar Bear that's really helpful. I don't get the options that require a pet to be bitten for the tick to be killed as by then the damage is most likely done like in he case of our dog. I really don't mind going overboard with the protection levels and I'd recommend it to everyone especially after my recent experience.
So Morgan, our dog also got Ehrilichiosis and started showing all the signs (that we didn't know at the time) like lethargy , lack of appetite. He started going downhill fast and our vet at Sukhumvit Veterinarians suggested we immediately take him to the Thonglor international Pet hospital. He been there for the last 4 days in the ICU with a really low platelet count. He has been given his second blood transfusion yesterday. Really hoping he pulls through.
The costs at the hospital are astronomical. its running us 20K THB per day with the ICU charges and all the medications. Don't know if these are their regular charges or I'm being overcharged at expat prices but at this point we have no other choice.
We moved here recently from a place that have no ticks borne diseases so the dogs have no resistance to them and sadly for Morgan we had no knowledge of it either.
I managed to find Vectra 3D here - https://th.miscota.com/search/s?q=vectra