Not poison because they die in the house walls...although there is a type that dehydrates them so no smell but how cruel.

Dehydrated-rock-hard stupid.

It dehydrates the bed bugs and gets rid of them forever.

The diatomaceous earth dehydrates the termites similar to boric acid.

Boric acid dehydrates the roached exoskeleton and they drop dead immediately.

It dehydrates and kills the roots. 

They actually (I learned) will lick themselves like crazy and track and bring this mixture back to the colony and it causes colony collapse (dehydrates them or something).

Concrobium (Home Depot) only encapsulates and dehydrates.  

We're just getting ramped up for the part of the season that we're most famous for, so I figured since going outside during daylight hours could lead to dehydration, I'd jump in here and introduce myself.  

B is less likely to succeed since most people can't market/sell a bottle of water to someone dying of dehydration, so they spin their wheels for 6 to 18 months with zero results to show for it.