Hello! So it tends to get very hot where I live, so I have come up with many ways to keep Mabel cool.
First, a marble slab should be kept in the cage at all times. I bought 4 square marble slabs from the Home Depot for around $7. If you can't find those, you can always order a chinchiller or check your local pet store for one.
I read online that if the next day is going to be hot, place your marble slab in the freezer and let it freeze overnight! Then in the morning wipe any frost that might be on it away, and place it in the cage. It is much cooler, and I know Mabel loves to rub her head all over it.
I am not sure if you use fleece or not, but I do. I grab an ice pack and put it under the fleece. Then I move it to her hide away. She loves that so she can stay in her hide away and still be cool.
I hope these ideas help! XOXO