of the hereinafter described drop marker ejection and deployment sequence wherein a drop marker 16 1 extends or trails rearwardly from an ejection opening 17 that is formed in the aft portion of dispenser 10 as is illustrated by drop marker 16 1 of fig1 each drop marker 16 includes a relatively flat relatively inflexible base member 18 18 1 in fig1 and a relatively long flexible streamer 20 20 1 in fig1 having a length to width ratio substantially greater than unity with the first end 22 of the streamer being securely connected to an associated base member 18 preferably base member 18 and streamer 20 are constructed of material that is nontoxic to animals and is biodegradable for example currently employed embodiments of the invention utilize corrugated cardboard that is 3 4 mm thick to form the base members 18 and utilize an 11 cm wide 4 6 meter long strip of tissue like paper as the drop marker streamer various alternative arrangements are generally available for securely connecting the first end 22 of a steamer 20 with its associated base member 18 so that the streamer remains attached to the base member when the drop marker is ejected form dispenser 10 for example in the above mentioned currently employed embodiments of the invention the first end 22 of each paper streamer is placed in overlapping juxtaposition with a first surface 24 of the associated base member 18 1.