The grass also helps in good absorption of the liquid and does not let the odor get out of the pad as well. Ordering these dog pads is also very easy and it is recommended that the patch should be changed weekly if it is used indoors. However, if the patch is used outdoors then it can sustain for a maximum of 4 weeks as well. So order a high quality and economical dog pad for your loving dog from Pooch Patch today.