Most household chemicals or disinfectants (such as chlorine bleach) will not kill roundworms. Fire or heat, such as from boiling water, is required to kill the eggs.

Are roundworms resistant to bleach?

Roundworm eggs are extremely resistant to common disinfectants, including bleach, and environmental changes. What makes them even more persistent is their sticky outer coating, which makes them very difficult to remove from surfaces, including concrete.

What kills roundworm eggs on surfaces?

Litterboxes can be cleaned with a bleach solution (one cup of chlorine bleach in one gallon of water) to facilitate removal of eggs. Rinse the litterbox thoroughly to remove all bleach since it is toxic to cats. Surfaces that may be contaminated with roundworm eggs can also be treated with this bleach solution.