Yellow sticky trap: bright color attract flying insects, and high quality glue keeps them from escaping.Specially designed for flying plant pests. Great for outdoor or indoor plant, especially potted plants. Easy to use: the fruit fly trap with sharp bottom can be inserted directly into the soil, avoiding the trouble of tying ropes or hooks. Safe and non-toxic: gnat trap use bright colors and glue to catch pests, no odors and harmful drugs, no harm to people and pets. Warm prompt: the temperatures rise in the summer, maybe causes the glue to melt, and fruit fly traps indoor stick together. Please keep this gnat killer for indoor in the refrigerator for a while before using it. Carefully peel the protective film and avoid film rupture. Long lasting: bug sticky traps with a very strong adhesive , they are uv resistant and waterproof. No need to replace them until fully covered with bugs.