Excellent suggestion, Talien and thanks on behalf of ALL of us. Because we never know when we might need to do this.If you do that take off the cover plate and blow it into the box itself and not through the plug. Better still if you trip the breaker for the circuit for each outlet.
Although if you find evidence they are in the outlets a better way to kill them would be to blow smoke into it for a few minutes. That would be about the only time you'd want someone smoking inside the house.