Depending on the model, our trays are very large. Depending on the degree of contamination, we either clean our trays with water or brush off the remaining soil.
In summer and if you have a garden available, the easiest way to use a garden hose is to use it.
This is difficult to do in winter or in an apartment. We then simply use the bathtub or fill a larger container with water and put it in the shower.
For germ-free cultivation, we spray our trays with a hydrogen peroxide solution shortly before use. This can reduce the development of mold.