My cat used to use flea collars, and it was slightly poisoned, that is, it was weak and listless. When she found them, she immediately removed them and recovered within one day. I don't think the landlord's cat is slightly poisoned. It is suggested to take out the flea medicine with a wet towel and send it to a doctor immediately. At least, during the time when it doesn't eat, it needs to drop a drop to keep it alive. Cats have a strong vitality. I hope the weather will be fine.