I only found tiny ants in my LH salad -- must have been over 6 years ago, in business. There may still be photos on my computer somewhere. There were 2 or 3 of them scampering around the plate. I alerted the purser and purified myself with a strong drink. Never wrote in about it, just sort of forgot. Over a month later I got an apology letter from LH, with a 50 Euro voucher for inflight shopping, which I did eventually use. I was pleasantly surprised that LH tracked me down and followed up.