I can recommend them highly. For a start get the 2 pack Kitchen/Bathroom pack, green and blue. The green is for general cleaning and the blue works like a dream on mirrors, glass and chrome. You don't use any chemicals, just plain water.
The cloths are made from a microfibre type of cloth. To use the blue one on glass, you just rinse the cloth in water, wring it out and wipe your window or glass table top - as you wipe you turn over different parts of the cloth, then leave. No streaks! I've had some for years.The cloths may be used on worktops,all hard surfaces but are especially effective on glass, chrome and stainless steel - leaves the taps looking like new.
You can buy them online at their website, on eBay, Arnotts or Stock, probably loads of other places as well, but these are the ones I've used. Excellent for anybody with allergies. They're well worth the price - just think of the savings you make on chemical cleaners plus they're environmentally friendly. God, I sound like an ad for them, but seriously don't hesitate to buy.