There is always Strychnine sir, would take around half an hour to take hold, then they would be at your mercy whilst the effects tamper with their light and sound sensitivity. I would suggest staying away from building sites or loud areas if you want the most control.
I have a vial of Botulinum…but how important is this client of yours? It’d be easy to slip the dose, but then I don’t know how long you want to hold on to them after that. Also it’s taken me months to get the toxicity level just right.
So useful. I think the Strychnine will do just fine for this one, but I'll keep that Botulinum in mind. What can you get the the Strychnine? I'd prefer it sooner, rather than later.