US Patent 6848392 Insect terminating pet dish

An insect terminating pet food dish apparatus includes a base, a bowl or rest member, and a support supporting the bowl or rest member above the base. An insect terminating assembly on the support includes at least a pair of electrically conductive coils extended about the support member in a substantially uniformly spaced relationship to each other. A first coil is relatively positively charged and a second coil is relatively negatively charged such that an insect simultaneously contacting both coils closes a circuit that includes the insect's body. The terminating assembly also includes a power source for producing a potential difference between the pair of coils. In one embodiment, the support is substantially cylindrical, and the coils are substantially helical on the outer surface of the support and each of the helical coils extends, from a lower position to an upper position on the support.