[Zorro]

When I moved in to this apartment in November 2013 I saw that there were already occupants here.

I really didn't do much to try to get rid of them until just seeing an occasional roach became a lot more frequent.

I did some research on the Internet and because I will be getting some pets later on I wanted to see if there was a non-poisonous way to deal with this issue.

One article I read was with the use of boric acid.

I bought some and it really did not have any effect.

Then I read an article about mixing equal parts of boric acid, sugar and water.

I bought a bag of small plastic containers at the dollar store and added 3 teaspoons of boric acid, sugar and water in 8 of these containers sealed up 6 of them and used the other 2 with a small soft bristled paint brush and "painted" the mixture on areas of my kitchen, bathroom and living room.

The day after I did this I only saw a couple of roaches.

3 days later I haven't seen any since.

I plan to re-treat again in a few weeks just to make sure I continue to not have a roach problem.

[SwitcherX]

What's the best way to kill cockroaches?

[Ninjaturtle]

best way individually is to cover them in liquid soap. they suffocate in moments because their spiracles can't breathe

[Zorro]

best way individually is to cover them in liquid soap. they suffocate in moments because their spiracles can't breathe

I use any dish-washing liquid soap such as Dawn.

I just add it to a spray bottle with water and it does the job. Saves a lot of money from not buying any sort of "roach spray".

It takes from 30 seconds to a  minute (depending on the amount of liquid soap and water mixed) to kill the roaches that you see scurrying around.

The boric acid/sugar mix does not kill on contact, but today I have found out that any eggs that have hatched were in areas not readily accessible.

These roaches will come in contact with the boric acid/sugar mix and take it back to the inaccessible areas where it will also kill the nests.

Remember this may take several days or weeks depending on the amount of infestation you may have.
 

[solvegas]

Well, I was going to recommend napalm but the neighbors might object.  But seriously, I've heard somewhere that spraying white vinegar also kills them.

[Ninjaturtle]

they drop dead because they prefer apple cider or wine vinegars