Can home remedies get rid of German roaches fast ? Yes, some of them can in my opinion. You do have to use effective products to get rid of theme. If you buy cans of spray like raid to get rid of cockroaches that will not work.You can use the whole can of spray and you will still have roaches. But if you use gel bait to get rid of the cockroaches you can eliminate them fast. To be successful cockroach bait must be more attractive than other food source. So therefor you must keep the area free from dirty dishes and crumbs on the floor and counter tops.