Ticks and pestisides

I am now an authority on ticks! Below you will see a picture of all the pesticides I have used to stop tick in the past year.
My dogs have been on Advantix Revolution until we sailed down here. Now we are on Advantix Plus and Heart Guard. If Advantix Plus worked on ticks I would not have had 7 months of tick hell. Advantix works for fleas, but is useless against ticks.
Now on the photo from left to right. When we got back to Grenada I went to the Vet and got additional doses of Advantix as well as "Seresto" flea and tick collars.
Seresto collars are absolutely useless against ticks! Most of the ticks I find on my dogs each day are within 3 inches of their Seresto collars (8 months of protection my ass). It might work for fleas, but has no impact on ticks! Don't buy this product for ticks!!!
Next was Hartz UltraGuard… Useless on ticks.
Next was Sergeant's Silver with Permithrin - useless for ticks
Next was Sergeant's shampoo - useless for ticks.
Next was Sven powder - kills on contact but does not have a long term impact.
Next was Enforcer - kills but makes the dog sick but has proven great on bedding.

I then ran a test. Given that I can get 20 to 60 ticks off of each dog each morning, I prepare some 1 pint mason jars with pesticide in each.
The results were shocking as that most of these pesticides didn't kill the ticks in the mason jars.
Each Mason jar was treated with one spray of pesticide (for Seresto I used a 3 inch clip of the collar and for the shampoo I diluted it 50% and coated the jar and let it dry).
Each Jar received 10 ticks of different sizes and then was closed to see how long it would take to kill the ticks.
Seresto - all ticks alive after 1 week. And most of my dogs ticks that I remove are within 3 inches of their collars - this product is useless for ticks
Hartz UltraGuard - only one tick dead after one week - another useless product.
Sergeant's Silver - eight ticks dead after one week, two still alive and healthy - not very good.
Sergeant's Shampoo - all ticks alive one week later.
Sven powder spray - all ticks dead in 3 days.
Enforcer - all ticks dead on the first day.
So, Advantix Plus (not shown in the above picture) is useless against ticks! And most of the pesticides sold have little or no impact on ticks.
The only product that work so far (after 7 months of ticks) are Sven powder and Enforcer.
Next week we are going to the SGU Vet to see if there is an oral medication that they can take that will sterilize the ticks - clearly none of the pesticides work without killing the dogs as well… I don't use Enforcer on the dogs cause is cause them to go crazy and sick afterwards. I need to find something else to kill ticks or stop them from developing and laying eggs.