HI, I HAVE BEEN USING THE Digrain Bugster EC Insecticide? FOR AROUND 3 WEEKS, I HAVE FOLLOWED THE INSTRUCTIONS TO THE LETTER. THE RECOMMENDED MIX HAD NO EFFECT I AM NOW USING A MIX OF 30ML PER LTR, AND IT IS HAVING SOME EFFECT BUT NOT THE EFFECT YOU SEEM TO SUGGEST AND I AM DISAPPOINTED BUT I HAVE BOUGHT A SECOND LTR BOTTLE TO CONTINUE THE TREATMENT THE PRODUCT IS EXPENSIVE AND I THOUGHT IT WOULD SORT THE PROBLEM BUT IT HAS NOT ,THANK YOU HUGH