Abstract: A modular protection device for underpinning for protecting underpinning from lawn care equipment includes an elongated trough having a first end and a second end. The first and second ends are open. The elongated trough includes a bottom wall, a front wall and a back wall each extending between the first and second ends. The trough has an open top side and defines a channel for selectively receiving a bottom edge of the mobile home underpinning. A foot is attached to and extends outwardly from the front wall. A plurality of troughs is provided. A coupler assembly for selectively couples a pair of the troughs together.