Universal Release Box - Bundle of 100 HVAC & HOME VENTILATION Concentrated potassium silicate will react

Concentrated potassium silicate will react with other elements

Designed for use with plants

Its stackable components offer safe

- Displays CO2

Universal Release Box - Bundle of 100 HVAC & HOME VENTILATION Concentrated potassium silicate will reactAn easy to use tool for releasing beneficials in the garden or evenly distributing predators across greenhouse plants or crop rows. Keep your beneficial insects and predatory mites safe from predators and the elements using the Universal Release Box. These can be hung throughout the growing area to provide safe areas to hatch or move out in search of prey once released. Hanging release boxes within the plant canopy allows predators to move into