My small collie with colitis did really well on TOTW except that she also tends to be anorexic. If she loses interest in a flavor, she just won't eat. (I once tried to wait her out, but she lost five pounds and I went to Plan B.) Since there are only four varieties of TOTW, she got tired of them and quit eating. I've had her on Merrick for about six months now, and that's going well so far. It comes in about 12 different flavors, so she doesn't get bored and stop eating.

She gets Flagyl and Prevacid from the vet for acute attacks and probiotics all the time. If we couldn't manage her with that, the next step would be steroids. I bought one of those polypropylene indoor/outdoor rugs for her sleeping area to make scrubbing up after an attack easier after having to throw out the regular rug.