An Oregon woman is suing her landlord for more than $250,000, accusing him of killing her cat with antifreeze after he complained about a urine smell at her home. Sarah Horton, from Portland, says Gerard LaMaita poisoned her Persian mix cat, Mylo, in a lawsuit filed last week after he repeatedly entered her apartment in the weeks leading up to the death. She says the sudden death of her emotional support pet earlier this month left her in a 'terror spiral' and she could not eat or sleep as a result. Student Sarah also says she failed her classes at the National University of Natural Medicine in Southwest Portland when 11-month-old Mylo died. Horton, who has since moved out of the rental home, alleges she found 'foamy and frothing' liquid on the floor at her home before her cat suddenly fell ill. When she tested his water bowl with a home kit, Horton alleges it came back positive for antifreeze. Sarah Horton, left, is suing her landlord Gerard LaMaita, right, for more than $250,000, accusing him of of killing her cat with antifreeze. LaMaita was filmed inside the rental home Horton, pictured with Mylo, alleges he suddenly fell ill after she found 'foamy' liquid Sarah, from Portland, says LaMaita poisoned her Persian mix cat, Mylo, pictured The lawsuit states: 'She then noticed that Mylo was not acting like his normal self, but instead sluggish and depressed. 'Mylo was despondent and nonresponsive, and didn’t even react with Plaintiff called for him. 'Mylo then followed Plaintiff into the bathroom and laid down in the litterbox, which was also unusual. 'The vet came back with terrible news, explaining that Mylo was in end-stage renal failure and had lost 90 per cent function in his kidneys. 'At best, with intensive care, the vet estimated a few weeks to a month of life left and that Mylo would never recover. 'Despite aggressive treatment, Mylo’s condition worsened, and the vet recommended euthanasia. 'The likely cause of death was toxins from a non-natural substance. Over the next few days, Plaintiff discovered a bottle of anti-freeze in the basement. 'Despite the significant layer dust, a fresh hand print was on the bottle, to indicate recent use.' The lawsuit claims that LaMaita, left, also entered Horton’s apartment along with Rebecca Mairs, right, in the days after Mylo's death without prior warning Mairs is accused of entering the apartment without permission In the aftermath of Mylo's death Horton set up surveillance cameras in her home. A day after installing them the lawsuit claims that LaMaita entered Horton’s apartment along with Rebecca Mairs without 'notice, consent, or an emergency'. It goes on: 'Defendant Mairs said that it did not smell like cat urine anymore, to which Defendant LaMaita replied that he did not figure it would.' Horton originally contacted police, according to her attorney, Joshua Lay-Perez, but Oregon Humane Society’s investigators said there wasn’t enough evidence for a criminal case. She also set up a GoFundMe to help with costs. LaMaita did not respond to requests for comment from Oregon Live. Mairs, accused of entering the apartment without permission, also couldn’t be reached. All rights reserved for this news site dailymail and under his responsibility