Non-toxic glowing resin stones per bag | Absorb sunlight during the day and light up at night.And they will glows for up to 2-3 hours after normal daylight exposure | Eco-friendly pebble lighting that requires no electricity and no power | Methods of decoration: Line a walkway, edge a flower bed or fill a planter with these pebble stones that will glow in the dark after being exposed to daylight.Ideal for waterscapes, landscape decoration, potted plants,edge a flower bed, lighting a pathway or driveway, gardens, crafts, aquariums, etc | The pebbles are also safe for indoor use, but make sure to get enough sunlight for them to really glow once the lights go off!