"Sheri Frost is looking for a new apartment after a wave of tiny, unwelcome visitors inside her current home seemingly could not be beaten back.  "It only gets worse day by day," said Frost. "They're having babies every day. They spawn vampires."  For two months, Frost has been sharing her Harbor Gateway home with bedbugs, small parasites that burrow into furniture and feed on human blood.  The 44-year-old said the infestation has taken a personal and financial toll.  While sitting in a rental car outside the blue four-plex, which was being fumigated for a second time, Frost now claims she is being run out of her apartment because of the problem. The disturbing nationwide trend of bedbug infestation caused a "summer of bedbugs" with thousands of reported cases in New York City and across the country. One of the main causes of the bedbug spread is from the insects hitching rides on travelers.   The problem began in mid-August for Frost and her 17-year-old daughter and visiting 22-year-old son. Frost's son started getting bitten and received 300 to 400 bites over the week he was sleeping on one of their couches.   After finding 10 to 15 bugs coming out of the couch, the mother and son identified the insects on the Internet as bedbugs. Frost said she notified her landlord immediately. "No child should have to go through that and be afraid because something will eat them at night," Frost said.   Frost said her landlord persuaded her to split the expense of hiring an exterminator, who Frost said failed to eradicate the bugs.  According to Frost, the landlord told her she would have to pay $350 in cash for half of the extermination cost. Unfortunately, after the initial fumigation, the bugs returned. Mike Masterson, co-owner of ISOTECH Pest Management, was recently brought in by a local TV station to provide a second inspection of Frost's apartment after the treatment by the landlord's exterminator. "I picked up the first frame on the wall and there were bedbugs behind it," Masterson said.  Masterson said Frost's case was probably an average infestation. But what are not average are the numbers of cases Masterson and his company are seeing on the West Coast. "Five years ago, we did about 35 bedbug rooms in California," said Masterson. "Just in the last month, it's gone crazy. By the end of the year, we're set to treat about 38,000 facilities."  He added that more than 30,000 of them are in the Los Angeles area. The county environmental health department has even developed a special code to track insect complaints in response to the issue, said Ken Murray, bureau director of the department's District Surveillance and Enforcement Bureau.  Since March, Murray said they are seeing around 25 verified cases per month, a rate that has held steady since they began the tracking. Murray added that the bureau is handing out information to hotel owners and landlords and has created special training for the department's staff.  He added that the county health code requires that notified owners correct the problem with a certified pest control company and that tenants have responsibility, too.  "Bedbugs are a problem that both parties have to do their part to control," he said. Frost believes she did her part to combat the problem and that the landlord should be taking more responsibility instead of blaming Frost entirely.  "I can understand the landlord's point of view about how devastating this is," Frost said. "But, if you do it right the first time, you're going to spend less money." The landlord did not respond to a request for comment on the situation.   When the exterminator hired by her landlord performed the initial fumigation, Frost said the spraying was over in 45 minutes. Masterson said that is not long enough for one person to treat an apartment like hers. Frost also said she discovered from the exterminator that he was under contract with the landlord, meaning Frost was paying $350 while the landlord was paying nothing.  Murray said it is much more difficult to control an infestation of bedbugs compared with other pests.   "They tend to burrow into the furnishings and into the bed, said Murray. "You need a professional involvement to do a good job." According to Murray, the most common causes of the spread of bedbugs are travel and purchase of secondhand furniture and clothing, both of which he said are on the increase.   Frost said she does not know where the bugs came from.  She said she has not bought used furniture or clothing and has not gone on vacation.   "I'm tired all the time." said Frost. "I'm tired from having to deal with all this." Frost spent Saturday looking for a new apartment while the apartment was being fumigated again. She is also looking for an attorney to recover the costs of the problem, but says she cannot afford the fees she has been quoted.  Frost claimed she has lost half of her clothing, most of her furniture and spent several hundred dollars on expenses and the extermination. The tenant has stopped paying rent and wants to leave before her lease is up.  The family's remaining belongings are now packed in bags in the middle of the apartment and a broken-up couch sits outside.  "I have destroyed furniture on the side of the house and it's a reminder of what I have left in my life," said Frost. Masterson has given something for Frost to look forward to, though. His company has offered to fumigate her belongings and inspect her new home for free.  Frost said she cried when she heard about the offer after the ordeal.   "We're devastated because we've lost so much stuff," Frost said. "The fear of having to sleep at night with spray bottle and a flashlight. ... It's a nightmare."