Review on Walex Bio-Pak RV Black Holding Tank Deodorizer and Digester: Natural Enzyme Formula, Tropical Breeze (10-Pack) - Highly Effective Solution! by David Edwards

Do not waste your money or time on this product. THAT DOES NOT WORK! They could offer me a lifetime free supply and I wouldn't agree! My husband and I drive a semi-trailer and we have a portable toilet. I tried these instead of the original Dometic tank packs because I managed to get 10 packs but now I wish I didn't have to go cheap and pay $8 for the 3 packs that come with the Dometic packs. Bio-pac leaves a horrible odor that won't go away no matter how many times you clean the toilet. The smell is unbearable. And don't empty the toilet for 2 days, you will be ready to throw away the whole toilet. Please do yourself a favor and buy Dometic backpacks. A pack lasts up to 3 weeks and they smell wonderful.