Abstract: A cat litter comprising an absorbent and at least one fluorescent compound, where the at least one fluorescent compound does not contain cat urine and wherein the at least one fluorescent compound attracts cats to eliminate in the litter. The cat litter comprising a solid particulate material coated with a cellulosic solution containing at least one fluorescent material.

Abstract: An instrument drive system configured to attach to an instrument channel of an endoscope assembly and manage a relative feed position of an instrument using two drive wheels and a device application in a controller. The instrument drive system is attached directly to the instrument channel of the endoscope assembly. operation of the instrument drive system is proximate to the endoscope assembly and an inputs-controls and a deflection control thereof.

Abstract: An instrument drive system for advancing, controlling, and removing an instrument from an endoscope assembly. The instrument drive system comprises two drive wheels, a working channel, a body, and a drive gap. The two drive wheels comprise a first drive wheel, and a second drive wheel. The instrument drive system is configured to receive a portion of the instrument in the working channel, direct a portion of the instrument between the first drive wheel and the second drive wheel, drive the instrument through an instrument channel of the endoscope assembly, and selectively slow or reverse turning of the two drive wheels.