For monitoring terrarium temperature levels: * Remove paper backing. * Ensure surface is clean and dry. * Press thermometer firmly onto surface.
For single thermometer placement, choose a central location in your terrarium. Do not place the thermometer in the coolest or warmest area.
For dual thermometer placement, position one thermometer in the warmest spot and one in the coolest spot of the terrarium. Keep away from direct light/heat from incandescent bulbs