It doesn't affect adult bugs; just their larva. So it will take time (and the accompanying destruction) before you see results.

Also, are you using the RIGHT strain of Bt?

There is a couple of special strains for potato bugs, namely the San Diego and Kurstaki strains of Bt. Regular old Bt israeliensis that controls caterpillars won't do it.

Here is a link that might be useful: Link about potato bug control including Bt info:

I am using the Kurstaki strain of BT.

I understand that it will not work on the adult potato bugs but was thinking that it would work quicker.

I guess that I dont have the patience that I thought I had. LOL.

Thanks for the replys..

Plainly put, you're using the wrong Bt.

It goes like this:

Bt kurstaki works on caterpillars that are half-grown or less.

The primary use of Bt israelensis is against mosquito larvae, those wrigglers you see in standing water.

Bt sandiego and Bt tenebrionis are effective against a number of beetles.

Bt popillae is effective against the larvae of Japanese beetles and certain other scarab beetles.