
What are fleas?
Fleas are small, wingless, insects sized between 1-8mm. They  are  external parasites, living off the blood of mammals and birds. There   are about 2000 species of fleas worldwide; the most common is the cat   flea (Ctenocephalides felis). 
Yes, the cat flea will infest both dogs and cats.
Fleas attack a wide variety of warm-blooded creatures  including  humans, dogs, cats, chickens, rabbits, squirrels, rats and  mice.
Fleas can live on a variety of hosts. The cat flea, for  instance,  can be found on a wide range of hosts from cats and dogs,  through to  camels and cattle. There is, however, a human flea, (Pulex  irritans),  which is quite rare and can also be found on a variety of  hosts  including badgers, pigs and foxes. Fleas are usually found in the  fur,  feathers or sleeping areas of their hosts, depending on the host's   activity. In the home environment, the cat flea is commonly found the   dog or cat itself, in its bedding, or in its favorite resting area.
Fleas suck blood and cause anemia.  They are also a nuisance  to  their hosts, causing an itching sensation with may cause its host to   scratch aggressively and in some instances even harm itself. Fleas are   not simply a source of annoyance, however. Some people and animals   suffer allergic reactions to flea saliva that result in rashes.
The flea's life cycle is dependant on temperature and moisture, but generally lasts around 21 to 35 days.
For most of their life cycle, fleas can be found between   floorboards, in rugs and carpets, in beds and couches. Only adult fleas   are found on pets.
The female flea lays its eggs in the pet's fur. These eggs,  along  with flea droppings, fall off the pet and can be located wherever  the  animal was during the day - on a rug, a couch -  even your own bed!
The eggs hatch into maggot-like larvae, which feed on flea  droppings  until they turn into a cocoon-like pupa , where they will stay  for 10  to 17 days. If the surroundings conditions are right and hosts  such as  your dog or cat are around - the flea will emerge from the  cocoon and  start looking for a host. If the environment is not favorable  and hosts  are not available. The flea has the ability to wait in the  cocoon for  months, which is why flea management operations must be  carried out  throughout the year.
While adult  fleas can live up to 100 days on the pet, most  do not  live long on the pet - they die after 7 to 14 days. They are  replaced  by other fleas that have been developing in the area. For the   flea-treatment to be affective, both the environment and the pet must be   treated.
A flea allergic dog's reaction to fleas can usually be  noticed as  hair loss at the lower back, above the tail. A flea allergic  cat's  reaction will usually be noticed as hair loss and bumps around the  neck  and head.
In most cases - the owner will see small (sand- grain size)  fleas  moving through  the pet's fur. The male fleas may be black to  brown in  color, while females may have an enlarged orange abdomen. In  other  cases adult fleas may be difficult to observe on the pet,, but the   reddish-black flea feces may be apparent.  To  confirm that these are   flea feces, the animal should be brushed in a manner that allows the   feces  to land on a white, moist cloth such as a handkerchief. If these   are indeed flea feces, they will dissolve leaving blood- red marks may   be found on the cloth. These are flea droppings left by the fleas.
LEDs do not light up:
1.Ensure operating switch is in ‘I’ or ‘A’ position.
2.If you are operating on external power supply:
- Check connections between the electrical cable and the outlet, and between the electric cable and socket.
 
3.If you are using internal power supply:
- Make sure to replace batteries before they wear out.
 
Important: When switch is set to ‘A’ it will only operate in the dark.