I have a shallow concrete bird bath which my feathered friends really enjoy using. Trouble is that it absorbs water quite rapidly , leaving some bathers still unwashed.
Is there anything non-toxic I could use to stop or reduce the absoption ?
The difficulty is that it's hard to find out about bird toxicity.
Since this is acrylic, I would guess that, once it's dried, the seal is formed, and that should be it. No further fumes etc.