I would try another tray and fill it with a different type of litter. if you currently using quite a grainy/gravel type one - try one which is a fine sandy texture.

Good Luck!

~x~

__________________
2 Maine Coon x, 1 Pixie Bob + 1 Norwegian Forest + 1 Tarantula !

R.I.P. Darling Jackson 11/7/09 - 15/1/10
Black Norwegian - died under anaesthetic for neutering
R.I.P. - TC - Black & White Moggie
R.I.P. - Pepsi - White & Black Moggie
R.I.P. - Micky - Little Yorkie
R.I.P. - Buddy - Chihuaha Cross
R.I.P. - Sunny Hill Lad - Arabian