Rinse the litterbox thoroughly to remove all bleach since it is toxic to cats. Similarly, surfaces which may be contaminated with roundworm eggs can also be treated with this bleach solution. It makes the eggs easier to rinse away but does not kill the eggs. Always wash your hands after handling litterbox material. Once an environment is contaminated with roundworm eggs, they may remain viable for long periods unless they are exposed to direct sunlight or very dry conditions.
Strict hygiene is especially important for children.
Do not allow children to play in potentially contaminated environments. Be mindful of the risk that public parks and non-covered sandboxes pose. Even though stool may not be visible, roundworm eggs may be present. Sandboxes which have fitted covers are popular and are well-advised to prevent infection of children with roundworms. Contact your animal control officials when homeless animals are found.