Hi Well now it is very hot in a lot of countries and it is a hard time for our furry babies.
In summer you can keep the dustbath in the fridge this helps the chins to stay cool and it prevents the bacteria from growing.
I also found a nice alternative for a chinchiller. You can collect some pebbels from the beach or your neighbours garden,put them into any box that is large enough to fit a chin and keep them refridgerated.You need about two hands full. This is a great thing for playtime.Dizzy did a test bite on each pebble haha