Permethrin

[MXcross]

Hi all,
Does anyone know where I can get this pesticide from? Permethrin
I want to treat the garden as the dogs are getting an unusual amount of ticks at the moment.
Treated the dogs with Frontline and all the powders, but it seems to have been a waste of 2000 baht
We have the usual twice a month sprayers come here but they treat mainly for termites and to be honest they don't do that very well.
I have the compressor and the water butt to mix this stuff in, but when asking anyone in the towns pest control shops they just look at you with a blank face and try to sell me termite spray.
Any help appreciated..

[simmo116]

certain ant powders have varying concentrations of permethrin if that helps.