I spent many moons stuck with these troubles...
The hands-down best and most easily refillable solution I found was at Walgreen's/Walmart. They should have, in their make-up section, little round facial cleansing pads that fold perfectly in half without being obtrusive in your crack.
They are cheap, come with many pads, and are available 24/7 whenever and wherever you need them. I always kept handy-wipes around for "pilling" and an extra freshening whenever I used the lou and changed my pad.
I found that menstrual pads can work well, but some brands will start to disintegrate on your booty and create a big fuzzy mess if the pad is cut or altered, so watch out for that. Otherwise, that's an option too.
The last suggestion I have are by far the most hygenic pads, but they are from a medical supply store, and I don't know about
your neck of the woods, but those are few and far between around here. If, by chance, you have access to one, check their first-aid section as well. There is a type of bandage covering, sometimes referred to as a type of gauze, that comes in 4x4 squares. It is more of a high-pile TP in softness, with the durability of gauze. The TP factor makes it super absorbent, so I would sometimes save this for long car rides or "bad" days. They sell a similar product at Wally worlds by the First Aid/Johnson and Johnson line. They're usually larger boxes on the bottom row, maybe 10 individually wrapped packages of 2 pads... These are nice, but are wayyyyy more expensive... too expensive in my humble opinion.
Hope that helps, but hope even more that your troubles go away soon.
27f, dx'd CD July '05 after 6 fistula/abscess surgeries
Remicade '05 through '08, with no other maintenance meds (ah, those were the days, eh?)
Tried Humira. Failed. Tried Gluten Free. Leaning towards Failure there too.
Cimzia (started 2-12-09) Again, not helping much, if at all.
Probiotics, Digestive Enzymes, Forvia vitamins, and calcium chewies
Feeling a bit jaded lately, but trying to keep my chin up.