Owners will notice the foam appears dry from the exterior, but the interior of the foam is still damp enough. The bacteria retreat into the centre of the foam blocks where there is still dampness and go dormant rather than die out. Once new sewage is reintroduced, the entire foam volume will become a livable environment for the bacteria again and treatment should kickstart on its own. For situations where this may not happen, we can provide a bacterial product we call septic jumpstart which can be dumped into the Biofilter dosing tank. This additive introduces additional bacterial colony to the foam media.