Store your shoes properly.
To get the best value and performance from your climbing shoes, store them in a cool, dry, well-ventilated place away from direct sunlight.

Carry your shoes on the outside of your bag after climbing.
After a hard session, moisture is retained in the suede and leather lining of your climbing shoes. Let them air out overnight to prevent moisture build-up, reduce odour. Over time, trapped moisture can also degrade the inner fabric and stitching prematurely.

Keep your shoes out of prolonged direct sunlight and do not store them in the car at all.
The rubber on climbing shoes is bonded using heat-activated glue. Direct sunlight, even in winter, specially the heat inside a car can get so hot to cause the rubber to delaminate.

Try not to belay or walk around in your climbing shoes.
Climbing shoes are designed for climbing, not for walking or standing around. Walking in them can pick up dirt, stretch the shoes, and reduce their precision. Keeping them clean and snug will help you stand confidently on those tiny footholds when it matters most.

Send your climbing shoes in for resoling before you start climbing on the rand rubber.
Climbing shoes are designed to be used on the sole rubber not the rand rubber. If you are climbing on the thin rand rubber where the sole should be, the sole has worn through and your shoes are ready to be resoled.
If the rand also needs replacing, the repair will cost more, and take longer due to the extra work. Avoiding damage to the rand allows your shoes to be resoled more times and helps them continue performing at a high level.

Happy climbing.