Unlike the rats and flies, the roaches are just a crawly distraction in the subway before you fight with Speeding Spike. You can't affect them at all.
Floor tiles do not kill cockroaches. You will need to use a pesticide.
Ethyl alcohol can kill cockroaches. Bug killers can be bought especially for cockroaches in a spray form also. This is a popular way to kill roaches.
Yes
No
yes
Yes it can.
Orange oil is known to effectively kill cockroaches. Orange oil is commonly found in degreasing spray that is used in the kitchen for cleaning.
You can kill them near Edgeville, and no there is no safe spots for the Soldiers, they have an added ranged attack, that hurts more than their melee does.
By getting food that they like and trap them and kill them.
Bug killers. But don't kill them. They kill cockroaches and other pests
Some people claim that any cheap tobacco spread around the outside or hidden areas in a home will kill cockroaches. There are pure nicotine oils that can be purchased that have the same effect.
Thermal remediation is a remedy to kill bed bugs, but is ineffective in killing cockroaches. Cockroaches are usually killed by taking away the food supply, which can be about anything and sprays that make contact with their body.