its effective and i really appreciate the product as now we dont have a single cocroach or insect at home now. and it is harmless also  and it has no odour also. its really effective ofcourse it is very costly but effecive. we paid 2700 rs for that for annual subscrition .they have to come thrice a year a now.after ist shot it started showing the effect after a mon or so.but then everything was cleared and no need of removing your stuff from your cupboards and all.this is effective.yes effective. now i cant writemore than this but i need to complete the 150 words oh god i am just writing and writing.i am now tired tired tired of writing oh god oh god oh god oh god oh god oh god. now what todo to do do do . O O O o o o o o o o o o o o o o o o o o lo o o o olb 
thank you