Do mosquito patches really work? Or do I need to supplement with repellant?

I prefer mosquito repellent over patches. For patches, you need to stick quite a few pieces over few areas and it is not so economical since patches are quite expensive also. At times it will leave marks on the cloth if forgot to peel off. I choose non-deet and chemical free mosquito repellent like Babyganics Natural Deet Free Insect Repellent. You can purchase from iherbs.com at about $13 per bottle (6oz).