To clean the inside of shoes, a means is proposed in the form of a highly viscous modelling material, consisting of native guar and 75% to 95% by weight combined water and disinfectant with a liquid antiseptic action and aluminium chloride-containing cleaning agents, as well as antimicrobial and anti-fungicidal agents, wherein the consistency is such that the agent is able to adapt to the inside and the inner and outer surfaces of open and closed-toe shoes under the effect of gravity.