YES! Absolutely, it will save you money and cut down on the vast numbers of single use cups that end up in landfill.
Download the Refill App to show places to save money on each hot drink purchased with a reusable.

Staggering numbers - In the UK, 2.5 billion coffee cups are used and discarded annually. Only 0.25 percent of these cups, or less than 1 in 400, are recycled.
Take a reusable and slash these numbers.

Clean every day, either in the dishwasher if manufacturer guidelines show or wash in washing up liquid and warm water with a natural fibre brush. Keep dry between uses.