Trains cats to go #1 on the pad instead of in the box

I heard some good things about this and now fully regret the purchase. I had a rubber mat before that caught most of any litter my two cats would track out, but wanted something that could catch more. The problem is now my cats daily pee on this mat instead of in the box and do their #2 in the box. I had to swap back to the rubber mat to stop this and tossed this mat, something about the collected litter and thicker mat lets them think it's another bathroom rather than a litter collector.

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