Abstract: A clear ice cube tray includes an inner box having a plurality of holes formed through a bottom thereof, and the inner box is received in an outer box with a gap defined between the bottom of the inner box and the inner end of the outer box. The inner box is congruent in shape with the outer box. A heat isolation housing includes a space therein for accommodating the inner box and the outer box. The water is filled in the inner box and the outer box, and frozen from a surface of water in the inner box. The bubbles in the water are then pushed into the gap through the holes so that ice cubes made in the inner box is clear.

Abstract: A mosquito trap includes: a container defining an inner space therein and having a top opening in fluid communication with the inner space and adapted for entrance of mosquito therethrough and into the inner space; a perforated plate mounted in the container, dividing the inner space into first and second chambers, and formed with a plurality of apertures in fluid communication with the first and second chambers; and a carbon dioxide generating attractant disposed in the second chamber of the container.