A device for placing survey flags, and similar devices having stems, is operated so that the stem is locked or otherwise held to an elongated shaft or similar aligning device. Insecticidal compositions of the present invention comprise spinosad and, optionally, insect foodstuffs and attractants. The suture passer guide can be configured to be passed through a central lumen of an endoscopic port. A decoding portion of the receiving end decodes and reproduces the command and the data with an amplitude value of the multilevel code string outputted from a receiving portion and the amplitude value of the multilevel code immediately before received according to predetermined decoding rules. 50 mm at a rate of 2 grainscm2 or more.