Grow organically and reuse the soil. Amend it properly and there is no reason to heave it out each grow, or ever, actually. If you use salt based nutrients you still could reuse if you flush it out really well, 'compost' it and amend with quality nutrients.
Soil amended properly with guano will not make smoke taste bad. Most guano tea will not make smoke taste bad. There are different kinds of guano. Some may make the pot taste the best, some does.
Earth Juice makes top shelf products, Rainbow Mix Grow and Bloom are two very good products that make great soil amendments or use as a feed according to directions. It's a dry product that ships easily and is very popular (available everywhere). It contains all you need. No need for additional guano.
But bat guano is very good for plants, when used properly.
Shovelhandle Reviewed by Shovelhandle on . Bat Guano: Yes or No? reading a grow guide from a seed company, they become apoplectic about guano, screaming: you'll never get it out of your soil! first, I'm assuming that they are talking about blending guano into the container (or ground). and, in general, after one grow, that soil is tossed, so why would/should I care that it stays in the soil? to date, I've NOT added guano to the soil; instead, I put it into an aerated tea, and damned little at that. somewhere I read that guano leaves a bad taste Rating: 5