RIDDEX PLUS...Has anyone ordered and used the Riddex electronic gizmo to keep...

...bugs and rodents...? ...away from the house?
Here in NW Florida, we have huge bugs that all want to come into the house...YUK...
We've been having an exterminator come every 3 months...and they spray poison around the peremeter of each room, as well as around the outside of the foundation.

It concers me that the cats can walk in the dried poison spray...and then groom themselves. The exterminator swears that the spray is harmless to people and pets...but, I wonder..

I'd love to go 'chemical free' and still not be invaded by these ugly 'Palmetto bugs' (a pretty name for huge roaches)...and the Riddex commercial looks like it COULD be a solution....has anyone had any results, either good or bad, using this product?