thanks boofoo, azazeal and kachu!
i was able to find frontline and so far, i see less and less fleas from my dogs. i must say i was thinking the same thing with the tiris method. because me and my dad always pluck out those pests and make tiris yet they never seem to end.
we had our dog area completely washed, pati walls. first with very hot water (nagpakulo pa ko ng water using charcoal, kasi mahal na LPG hehehe) then normal temp water with super daming chlorine. mejo nababawasan naman na ngayon.
salamat salamat sa inyong tatlo!