Here's a simple safe way of getting rid of cockroaches for good. I lived in a row home for a few years and when I moved in I was shocked at the amount of cockroaches that would come out at night especially in the bathroom. After hearing about how vinegar gets rid of roaches I filled a spray bottle and sprayed (misted) all of the floors in the house every night at first. I used the vinegar full strength even though I was told to use half water. I got used to the smell of the vinegar especially after not seeing any cockroaches anymore. If I recall correctly it didn't take long to be free of roaches... maybe a week or less.
Don't Kill Me!!!!
I spray my floors once or twice a week now in my new home just to keep the bugs in check. I clean my kitchen counters and sink every night with vinegar and I spray down my shower with it after each use. I've learned to love vinegar. It's a natural antibacterial cleaner that even gets rid of roaches and ants. What's not to love?