Dog training - Snake aversion

I regularly train my dogs but can't find a dog trainer who knows snake/toad aversion. Anybody know a trainer?

Most training centers are force free or positive only which I mostly agree with and follow myself. However, when it comes to snake aversion, even the Karen Proctor method is with an e collar. Im no stranger to using an e collar but I dont own a snake or toad to do it myself.

Might end up posting a Craigslist add for a snake owner whos willing to meet in some parking lot 4x over a month or so.

Hoping someone knows a trainer with this speciality