Lizard poop looks small, dark and often cylindrical in shape with a white tip.
The white tip of the lizard poop is made out of crystallized uric acid which is a lizard's version of urine or pee.
Lizards poop an vary in it's size and depends on the size of the lizard.
A house gecko lizards poop or droppings for example are much smaller in size than a monitor lizards poop would be.
Most lizard poop is often brown or can also be black.
And the exact shade of color of the lizards poop can also vary depending on the diet of the lizard and what they eat.
Fresh lizard poop can also be soft, especially if the lizard eats a diet that is high in moisture.
And as the lizard poop dries it becomes harder.
Lizard poop is most often encountered where lizards hang out such as on walls, near sources of light and in and around the lizards habitat.
Lizard poop may also be found around door frames and windowsills.
Lizard poop can make you sick if you come into contact with it and it gets spread to your mouth or nose, face etc.
So you should use a broom and dustpan to clean the lizard droppings up or use a damp cloth and use soap and water as a disinfectant or clean the area with some bleach.
Be sure to wear gloves if touching the lizard poop or lizard droppings and always wash your hands with warm and soapy water with some antibacterial soap as lizard droppings can contain bacteria such as Salmonella which is harmful to humans.