In summer, shoes get dirty no less than in winter. The main thing to fight is the smell of sweat, so shoes are sometimes simply sent to the washing machine.
However, not all types of shoes can be washed in a washing machine due to the material or design.
It is better to use other means if it is:
Washing leather shoes in a washing machine can damage the material and cause it to become deformed.
These materials may be damaged when machine washed.
Metal elements can damage the washing machine.
Rubber or plastic soles can be damaged when washed in a washing machine, especially if they have not been pre-cleaned of dirt and dust.
Such models may be unstable when washed in a washing machine and damage the washing machine or the shoes themselves.
These could be suede shoes or shoes with decorative elements such as rhinestones or embroidery.
Personal experience suggests that before leaving a couple in the washing machine, it is better to read the manufacturer's instructions.