Compositions capable of exuding a sealant liquid to a waterless urinal over time are described. The compositions have a base component including at least one substance that dissolves as it encounters urine, and a sealant liquid that is encapsulated by the base component and is released from the composition as the base component dissolves. The rate of dissolution of the base component may be controlled by a substance having hydrophobic and hydrophilic properties. The base component may further include other substances depending upon implementation.
