Gro-Fine 13 Lb. 5000 Sq. Ft. 30-0-4 Lawn Fertilizer with Crabgrass Preventer Black Beauty Ultra Heat exchanger is constructed of

Heat exchanger is constructed of HRS35 commercial grade copper

and it won't harm your lawn (when used as directed)

4 inches long

Features a tamper evident resealable pail

For manufactured home (Mobile Home) use only

Gro-Fine 13 Lb. 5000 Sq. Ft. 30-0-4 Lawn Fertilizer with Crabgrass Preventer Black Beauty Ultra Heat exchanger is constructed ofCrabgrass preventer plus lawn food. Controls crabgrass as pre emergent or early post emergent to extend application window. Provides quick, deep, even greening. Non staining formula uniformly covers to deliver an invisible barrier at soil surface that prevents crabgrass from germinating while feeding the lawn. Contains Dimension herbicide, providing a 4 month preventative barrier against crabgrass, many broadleaf weeds, and other annual grassy weeds.