Yes, the Chameleon Adaptable Hose End Sprayer can be used on smaller bottles such as the Weed Free Zone RTU. Use yellow adapter ring for smaller mouth bottles
We do have the manual for the Chameleon Adaptable Hose End Sprayer on our site here. Also a video here
The Chameleon Adaptable Hose End Sprayer is not a foaming sprayer and is only for use with pesticides for gardening and farming applications in outdoor growing, field crops, orchards & vineyards, nurseries, greenhouses, hydroponics, aquaponics, container plants, and houseplants