Duo Stick Select is a high quality blend of organosilicone surfactants (OSS) and methylated soybean oils (MSO). Designed for use with herbicides that call for the use of MSO and that does not exclude the use of OSS, Duo Stick Select provides superior coverage and penetration than MSO alone. Provides excellent coverage when using lower spray volumes less than 15 GPA. See label for application rates and mixing ratios. Sold in 1 quart bottles.