Mamy "The thing with the racquet type swatters is bits of the zapped fly shoot off everywhere - not good in a kitchen area."
I used to sell all types, none of the electrifying types should be used directly over or adjacent to food or food preparation ares, as bits do fly off.
If you need to place them in areas, use the electric glue board type, the flies stick to them rather than get exploded by them.
http://www.hygienesuppliesdirect.com/products/prod235079-electric-fly-killer-protect-a