|i have been told that branches of crape myrtle will get rid of fleas in the home...
Never heard that one. Getting rid of fleas is a combination effort including treating pets to kill fleas on them as well as killing fleas outdoors and indoors with products that kill adults and with growth regulator products that prevent eggs and larvae from developing. These must all be done together in order to shut down the cycle of the insects. The following web site offers more helpful and detailed information: