Pet-related fees in Switzerland follow the same basic categories found across Europe — a one-time cleaning fee, a refundable deposit, or a per-night charge — but the amounts tend to sit at the higher end compared with, for example, Italy, simply reflecting the country's general cost of living.
A one-time cleaning fee is the most common structure at short-term rentals; hotels more often charge a flat per-night pet fee instead. Refundable deposits are less common but do appear at some larger properties.
Always ask for the fee in Swiss francs (CHF) specifically and in writing, since a fee quoted informally in another currency can shift with exchange rates by the time you actually book.