Stop insect from coming into your condo in Thailand

If you have lived in Thailand you might know about insect that come into you house or condo.

I found a great way to stop that problem.
Also drain systemin Thailand is not same as in Europe.

Some clever autrailian has solve this problem.

http://self-help-directory.com/

Grate seal is an rubber "thing" that you put easy into your drain system and stop insect from coming into your condo