I bought a faith first product in May, 2010. Initially very well, after two months a hole is formed on the grid injuring me. After contacting with Philips.Ils told me that I did not know the use. Lol ... And therefore did not want to share me. Amazon did what we had to, so I recommended a lawnmower thinking it was a fault on the 1ère.Hé no, same concern after 4 months. (Use 3 / week) .An hole forms on the grid and makes the use impossible, therefore premature wear .. However I want to emphasize the professionalism of Amazon, great even listening for small amounts.