How to Prepare a Poultice
To prepare a poultice, boil water and allow it to cool to 38°C (so that it does not burn the horse) immerse the poultice and squeeze out excess water. Note that if infected pus is present, the poultice needs to be damp (not wet) so that the pus is absorbed into the poultice. If a cold wet poultice is to be used, follow the same procedure as above but simply allow the boiled water to cool before application. The poultice is applied to the horse after cleansing and drying the affected area and then secured with a bandage or poultice boot.
The poultice should be changed at least every 12 hours. The progress of the ailment can be checked at the same time. If the horse does not respond to treatment or is showing signs of distress, call your vet.