5D Dust

I've recently noticed a large number of specs appearing on my images. They are always in the same places (near enough) and they are very annoying - I've concluded that I have a quantity of dust on my sensor. I've been using lightroom's healing tool, then copying the settings and applying them to batches of photo's to reduce the retouching work, but today, a sensor cleaning kit that I ordered has arrived. When Jamie has gone for his lunchtime nap, I'll give it a go.