Empire of the Ants

Empire of the Ants is a movie starring Joan Collins, Robert Lansing, and John David Carson. Con artist Marilyn Fryser tries to sell bogus real estate deals in an area overrun by giant ants.
A Florida real estate developer and her captain lure investors to a property in the Everglades called Dreamland Shores, under false pretenses that the swampland will soon be developed. After the group arrives on a small island, they find it has been overrun by giant mutated ants, brought on by the dumping of toxic waste in the area.