It is best medicine for cocroaches .as comparison to hit chalk it is best anti cocroach .never seen before like this .its negative point is only this one .cocroach comes after some month they never gets end in house .they comes
After some month again as much as before applied medicine.but it is effective .cocroach becomes invisible after a days after applying this every where at house where coacroach comes at home.so go with it .it is best