This invention relates to a device to deflect debris and to reduce the accumulation thereof in the guide lug receiving space defined between the inner and outer portions of a wheel of a tracked vehicle. The device generally comprises a resilient band structure having a loop or collar portion partially disposed around the wheel of the vehicle and inside the guide lug receiving space thereof, a connecting portion adapted to be mounted into a support element fixed to the tracked vehicle and located about the wheel, and a deflecting portion extending between the loop portion and the connecting portion. The loop portion at least partially embraces the wheel and generally remains in a slipping contact therewith in order to support the deflecting portion. The deflecting portion effectively deflects debris away from the guide lug receiving space of the wheel and also prevents excessive accumulation of debris therein. The connecting portion generally maintains the position of the loop and deflecting portions while allowing them to move according to the movements of the wheel.