Source of chemical found in deceased pupils a mystery 

Cockroach insecticides do not have that substance, particularly at that level. This can be found in pesticides, and even then moderate levels. Someone did this intentionally

Yes, I think this is smelling rat.

Outside forces are responsible for this, no way that some ordinary spaza shop owner can be responsible for this. Deep down we know this, this coincidence this with when Shoprite and PnP are now opening spaza shops in townships is wow.

Our innocent children are buried now,so what is the solution?

The Spaza shops are not selling this, do not have this and not linked to the deaths. Someone killed the children