The antiseptic has dried up, and now we proceed to the construction of the bottom of the sandbox. The bottom is necessary. There are several reasons for this: 1. So that the sandbox does not overgrown with vegetation, 2 so that no bugs and spiders could fall through the ground into the sand. The bottom is best to make the bottom of the agrofibre, this is one of the material that is most suitable for the bottom. This material does not pass water, does not rot, as well as this good barrier for insects .