Abstract: The invention relates to a two part hand held windshield wiper conditioning device with a main body or housing having a male half and a female half having contoured outer surfaces. Both halves of the device are substantially triangular, the male half having three continuous projections, one per side, extending along the edge of its inner surface; and the female half having corresponding slots formed in and proximate the edge of its inner surface. The projections and corresponding slots allow for snug frictional engagement between the male half and the female half One of the projections has a course material adhered thereto, the edges of the male and female half proximate the course material being spaced apart thereby defining a channel sized to receive the windshield wiper blade edge. Both the male and female half have recesses formed in the inner surface, the recesses defining an interior space where a packet is stored when the halves are joined.