We have just started getting a window cleaner again. When we used to have one, it was soapy water, ladders and then a squidgy thing and it was left sparkling. This one uses a sort of brush water pole device which looked very clever, but a few hours after they’d gone, the windows were left covered with dried water spots. That can’t be right-they actually look worse than before! I will speak to him when he comes back in 6 weeks, but wanted to gauge from others what might be going wrong?!