Chlorate - see also Weed killer
Keep cats way from areas where these substances are being used or sprayed; make sure they do not have access to open containers of insecticides. Keeping fresh drinking water available at all times will prevent the need for cats to find other sources of liquid to drink to quench their thirst. Keep cats’ coats clean and free from any of these compounds, taking care to wash off any detergent used to remove the poison, many cats have been poisoned through licking the detergent/compound used to wash off the original poison.

Clinical Signs
Listlessness, depression, pain displayed in the abdominal area, blood present in the faeces and urine, blue or brownish coloured mucous membranes (check the gums, which should normally be a healthy pink colour)