The litter problem is worse than I've ever seen. In fact its probably the worst mountain for litter that I've ever been on. On a trip up and down the Pyg Track in February my friend and I cleared almost a full bin bag of rubbish. The worst area was at the summit. Piles of rubbish around the building. Bizarrely there are no signs or bins. I understand that bins would fill up fairly quickly but if a real effort was made to regularly empty them it would go some way to solving this problem. There could also be 'tasteful' signs dotted along the track (for example at the stiles at the bifurcation of the Pyg and Crib Goch) asking people to be mindful of littering.